Solve and simplify.
? y = 
A. 
B. 18
C. 
D. 7
Answer: D
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Find the following. Assume that the letter can represent any real number.
A. 
B. z + 2
C. (z + 2)2
D. 
Assume the following: The population of California is five times the population of Massachusetts. The population of the United States is twenty times the population of Massachusetts. The population of the United States is sixty times larger than the population of Colorado. Which of the following is not true? ?
A. ?The ratio of the population of Colorado to the population of the United States is less then 1. B. ?The ratio of the population of Massachusetts to the population of California is less than 1. C. ?The ratio of the population of Massachusetts to the population of Colorado is greater than 1. D. ?The ratio of the population of Massachusetts to the population of Colorado is less than 1. E. The ratio of the population of Massachusetts and the population of Colorado to the population of California is less than 1.
Evaluate the expression using the given values.
?x = 5, y = 7
A. 15 B. 91 C. 7 D. 63
Determine any local or absolute extrema as indicated.Use the graph of f to estimate the absolute extrema.
A. Absolute maximum: approx. 8.08; absolute minima: approx. -7.67 and 2.75 B. Absolute maximum: ?; absolute minima: -2 and 3 C. No absolute maximum; absolute minimum: approx. -7.67 D. Absolute maximum: approx. 8.08; absolute minimum: approx. -7.67