The function $W(t) = 2600(1 - 0.51e^{-0.075t})^3$ models the weight, $W(t)$, in kilograms, of a female African elephant at age $t$ years. ($1$ kilogram $\approx$ $2.2$ pounds) Use a graphing utility to graph the function. Then $\boxed{TRACE}$ along the curve to estimate the age of an adult female elephant weighing $1800$ kilograms.

Each person below has asked for humanitarian protection. Make a ruling as if you were a judge hearing this person's claim. Be sure to give your reasons.

Grace is from an African country where female circumcision is practiced. She says that she fears returning to her country because she will be forced to undergo this painful procedure.

Does the target market of professional African American women fit the message and media that Camry used in this campaign? Be specific in your explanations for both message (what you thought the overall themes were) and media (what types of media such as print and Internet) that were used and how they suited the target audience.

A South African taxi driver has a fixed charge of 20 rand and then charges 6 rand per km. a) Draw a conversion graph to enable you to estimate the cost of the following taxi rides: i) 5 km. ii) 8.5 km. b) If a trip cost 80 rand, estimate from your graph the distance travelled.

In the following sentence, correct any errors in comparisons. Cross out any unnecessary words. Insert any missing word by inserting a caret (^) and writing the word above it. If a sentence is already correct, write C before the item number.

I think the African gray parrot is a better talker than any bird.

The number of African elephants has been greatly reduced by poachers who kill the animals for their ivory tusks. This negative aspect of human involvement in the ecosystem could best be described as (1) poor land-use management (2) importation of organisms (3) poor agricultural practices (4) exploitation of wildlife

Hypothesis tests are proposed. For each hypothesis test. a. Identify the variable. b. identify the two populations. c. identify the pairs. d. identify the paired-difference variable. e. determine the null and alternative hypotheses. f. classify the hypothesis test as two tailed, left tailed, or right tailed. The article “Accuracv of Self-Reported Height and Weight in a Community—Based Sample of Older African Americans and Whites” (Journal of Gerontology Series A: Biological Sciences and Medical Sciences) by G. Fillenbaum et al. explores the relationship between measured and self-reported height and weight. The authors sampled African American and White women and men older than 70 years of age. A hypothesis test is to be performed to decide whether, on average, self-reported weight is less than measured weight for the aforementioned age group.

Classify each of the following sentences as simple, compound, complex, or compound-complex.

Example : H. J. (Henry Jackson) Lewis is generally regarded as the first African American political cartoonist. simple

Upon Lewis's death in 1891, The Freeman, the newspaper that had made him famous, praised his talent and mourned his loss.

The 2010 census showed that the percentage of Black Americans who did not finish high school was 15.8%. Did this figure decrease by 2013? Conduct a test to determine whether there is enough evidence to infer that the proportion of Black Americans who did not finish high school had decreased (RACE: 2 = Black/African American; EDCL 1 = No high school diploma).

Underline each independent clause in the following sentence. Example 1. $\underline{\text{Many athletes remember Alice Coachman}}$ because she helped break down barriers for both women and African Americans.

While she was at Tuskegee Institute High School in the $1940$s, Coachman captured national track-and-field championships in four events.

In each of the following sentences, the verb agrees with its subject. Next to each sentence number, write S if the subject and verb are singular. Write P if the subject and verb are plural.

Example: ${\color{#c34632}S}$ This book of poems is one of my favorite possessions.

Gwendolyn Brooks was an award-winning African American poet.

The total income for African American households making under $250,000 in 2012 is given in the following table.$

$$\begin{array}{ccc} \begin{array}{c} \text { Income } \\ \text { Range } \end{array} & \begin{array}{c} \text { Midpoint } \\ \text { Salary } \end{array} & \begin{array}{c} \text { Frequency } \\ \text { (in thousands) } \end{array} \\ \hline \text { Under } \$ 20,000 & \$ 10,000 & 5037 \\ \$ 20,000-\$ 39,999 & \$ 30,000 & 3936 \\ \$ 40,000-\$ 59,999 & \$ 50,000 & 2593 \\ \$ 60,000-\$ 79,999 & \$ 70,000 & 1583 \\ \$ 80,000-\$ 99,999 & \$ 90,000 & 1031 \\ \$ 100,000-\$ 149,999 & \$ 125,000 & 1151 \\ \$ 150,000-\$ 199,999 & \$ 175,000 & 327 \\ \$ 200,000-\$ 249,999 & \$ 225,000 & 132 \end{array}$$

$ Use the table to estimate the mean income for African American households in 2012.

Return to the image at the start of this chapter (p. 433), which shows a celebration in Baltimore after ratification of the Fifteenth Amendment. Note the various activities depicted as representations of the impact of emancipation and voting rights for black men. How might an African American family at the time have understood the image? What about a southern white family opposed to the Fifteenth Amendment?

A simple technique that biologists use to estimate the age of an African elephant is to measure the length of the elephant's footprint and then calculate its age using the equation

$$l=45-25.7 e^{-0.09 a}$$

where $l$ is the length of the footprint (in centimeters) and $a$ is the age (in years).

Use the equation to find the ages of the elephants with the help of footprint.