During the design and specifications development stages of a remote meter reading system for residential electricity use (a system that allows monthly usage to be transmitted via phone lines with no need to physically view meters), the two engineers working on the project for the city of Forest Ridge noted something different from what they expected. The first, an electrical/software engineer, noted that the city liaison staff member provided all the information on the software options, but only one option, the one from Lorier Software, was ever discussed and detailed. The second designer, an industrial/systems engineer, further noted that all the hardware specifications provided to them by this same liaison came from the same distributor, namely, Delsey Enterprises. Coincidently, at a weekend family picnic for city employees, to which the engineers had been invited, they met a couple named Don Delsey and Susan Lorier. Upon review, they learned that Don is the son-in-law of the city liaison and Susan is his stepdaughter. Based on these observations and before they complete the system design and specifications, what should the two engineers do, if anything, about their suspicions that the city liaison person is trying to bias the design to favor of the use of his relatives’ software and hardware businesses?

A teacher tracks her students' test scores in math class. She wonders whether the class test scores show a correlation with the final exam scores. The table shows class test scores and the final exam scores for six students.

Is the correlation negative or positive? Explain.

The junior class president wants to know what theme song her classmates would like at junior prom. She is deciding between three different survey methods: a. Survey all juniors in her math class. b. Survey every 10th junior on the junior class roster. c. Survey 50 randomly selected students at a meeting that every junior is required to attend. Which method would represent the opinion of the junior class most accurately? Explain.

Reconsider previous problem using $\mathrm{EES}$ (or other) software, plot the rate of evaporation of liquid nitrogen as a function of the ambient air temperature in the range of $0^{\circ} \mathrm{C}$ to $35^{\circ} \mathrm{C}$. Discuss the results.

Describe the difference between scientific notation and standard form.

The secondary structure of $16 \mathrm{~S}$ rRNA has been predicted using computer-based sequence analysis. In general, terms, discuss what type of information is used in comparative sequence analysis, and explain what assumptions are made concerning the structure of homologous RNAs.

Graphing calculators or computer software can be used to evaluate limits at least approximately. Simply "zoom" the plot window to show smaller and smaller parts of the graph near the point where the limit is to be found. Find the following limits by graphical technique s. Where you think it justified, give an exact answer. Otherwise, give the answer correct to 4 decimal places. Remember to ensure that your calculator or software is set for radian mode when using trigonometric functions. $\lim _{x \rightarrow 1-} \frac{\sin \sqrt{1-x}}{\sqrt{1-x^{2}}}$

Hguyen is calculating the price of a landscaping contract using her company's formula: $P=4 r^{2}+8 r s-4 r t$. For this job, r=2.5, s=5.4, and t=3.3. Hoping to avoid a lot of multiplication, Nguyen factors the formula, and finds the math is very simple. What is her factored version of the formula, and what prices does she set for the contract?

The recommended heart rate for exercise, in beats per minute, is given by the expression 0.8(200 - y) where y is a person's age in years. Rewrite this expression using the Distributive Property. What is the recommended heart rate for a 20-year-old person? For a 50-year-old person? Use mental math. What is the recommended heart rate for a 20-year-old person? Show your work. _____

Show how you can use properties of operations as strategies to evaluate each expression using mental math. Then evaluate the expression. A. 0.2 + 7.9 + 3.8 + 1.1, B. −5.6 + 5 + 4.6 + 1 C. $3 \frac { 1 } { 6 } - 4 \frac { 3 } { 4 } + 1 \frac { 5 } { 6 }$, D. $2 \frac { 1 } { 12 } + 3 \frac { 1 } { 6 } - 1 \frac { 1 } { 12 }$

For each equation below, solve for x. Sometimes the easiest strategy is to use mental math.

$$\begin{array} { l l } { \text { a. } x - \frac { 3 } { 5 } = 1 \frac { 2 } { 5 } } \\ { \text { c. } 2 x - 3.25 = 7.15 } \end{array}\quad \begin{array} { l l } { \text { b. } 5.2 + x = 10.95 } \\ { \text { d. } \frac { x } { 16 } = \frac { 3 } { 8 } } \end{array}$$

Select the key term that corresponds to the given definition

_____ the simplest representative particle in a substance held together by covalent bonds.

(a) bond angle

(b) bond energy

( c) bond length

(d) bonding electrons

(e) chemical bond

(f) coordinate covalent bond

(g) covalent bond

(h) delta

(d) notation

(i) diatomic molecule

(j) double bond

(k) electron dot formula

(l) electron pair geometry

(m) electronegativity

(n) formula unit

(o) hydrogen bond

(p) ionic bond

(q) molecular shape

(r) molecule

(s) monoatomic ion

(t) nonbonding electrons

(u) nonpolar bond

(v) octet rule

(w) polar bond

(x) polyatomic ion

(y) single bond

(z) structural formula

(aa) triple bond

(bb)valence electrons

(cc) VSEPR theory

Express the following quantities in scientific notation. 0.0002383 ms

Contrast, in general terms, the structures of an alcohol and water.