Drawing Conclusions If you yell or clap your hands while standing at the edge of a large rock canyon, you may hear an echo a few seconds later. Explain why this happens.

The table shows the amount of money raised by each region. The four regions raised a total of $\$(5.38\times10^4)$. How much did the West raise?

$$\begin{array}{|c|c|} \hline \text{Region} & \text{Amount Raised }\$\\ \hline \text{East} & 1.46\times10^4\\ \hline \text{North} & 2.38\times10^4\\ \hline \text{South} & 6.75\times10^3\\ \hline \text{West} & \\ \hline \end{array}$$

In Drosophila, the gene for cinnabar eye color is on chromosome 2, and the gene for scarlet eye color is on chromosome 3. A fly homozygous for both recessive cinnabar and scarlet alleles (cn/cn; st/st) is white-eyed. a. If male flies (containing chromosomes with the normal gene order) heterozygous for cn and st alleles are crossed to white-eyed females homozygous for the cn and st alleles, what are the expected phenotypes and their frequencies in the progeny? b. One unusual male heterozygous for cn and st alleles, when crossed to a white-eyed female, produced only wild-type and white-eyed progeny. Explain the likely chromosomal constitution of this male. c. When the wild-type $F_{1}$ females from the cross with the unusual male were backcrossed to normal cn/cn; st/st males, the following results were obtained:

$$\begin{matrix} \text{wild type} & \text{45$\\\%$}\\ \text{cinnabar} & \text{5$\\\%$}\\ \text{scarlet} & \text{5$\\\%$}\\ \text{white} & \text{45$\\\%$}\\ \end{matrix}$$

Diagram a genetic event at metaphase I that could produce the rare cinnabar or scarlet flies among the progeny of the wild-type $\mathrm{F}_{1}$ females.

If the quantities x and y are related by the equation $y=\frac{3}{x},$ then we say that y is _____ _____ to x and the constant of _____ is 3.

All triangles are polygons can be written as A. If a figure is a polygon, then it is a triangle. B. All polygons are triangles. C. If a figure is a triangle, then it is a polygon.

Find the domain of the expression. $\frac{\sqrt{2 x}}{x+1}$

Does a car accelerate when it goes around a corner at a constant speed? Explain your answer.

What is the name of an ancient supercontinent? (1) Pangaea (2) Gondwanaland (3) Laurasia (4) North America

Root Words The word reflection contains the root fled . Use a dictionary to find the origin and meaning of this root, and explain why it is appropriate that the word reflection contains this root. Then, list at least three other words that contain the root.

Develop a list of personal coping strategies to use against stress. Print these onto a bookmark or small card as an everyday reminder.

A jeweler has three small solid spheres made of gold, of radius 2 mm, 3 mm, and 4 mm. He decides to melt these down and make just one sphere out of them. What will the radius of this larger sphere be?

Find the standard form of the equation of each circle. Center ( -3, 1) and tangent to the y-axis

Write the equation of the inverse for each function. a. $f(x)=-5(3)^{x-1}+8$ b. $g(x)=\frac{3}{x-6}-4$

Which of the following statements is true about trash in Los Angeles in the early 1950s? a. All trash, both wet and dry, was burned. b. Only dry trash was burned. c. All trash was burned in incinerators. d. No trash was burned at the city dump. After World War II, thousands of families moved into Los Angeles and its suburbs. New neighborhoods were springing up, replacing orange groves and open space. Roads and schools were quickly built to keep pace with the rapid population growth. Surrounded by beautiful mountains, the entire Los Angeles basin looked like a new, green, sun-filled paradise to the families moving there. In the early 1950s, one of the common family chores in Los Angeles was to carry the trash out to the stone incinerator behind the garage, where each family burned its dry trash. "Wet" garbage was collected and taken to the city dump, where it was burned by the city. Everyone throughout the city either used an incinerator or burned things in an open trash pile.There were more than 400,000 back- yard trash incinerators. On warm afternoons, people's eyes would sometimes sting and burn. People would stop, close their eyes, and let the cleansing tears refresh irritated eyes. They accepted this as a normal part of life in suburban Los Angeles.