Solve.The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke0.05t where k is a constant and t is the time in years. If the current population is 16,000, in how many years is the population expected to be 40,000? (Round to the nearest year.)
A. 107 yr
B. 18 yr
C. 8 yr
D. 10 yr
Answer: B
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Solve the equation for y.2x - 9y = 7
A. y = 
x + 
B. y = 
x - 
C. y = 
x + 
D. y = 2x - 7
Provide an appropriate response.One way to measure a person's cardiofitness is to calculate how many METs, or metabolic units, he or she can reach at peak exertion. One MET is the amount of energy used when sitting quietly. To calculate ideal METs, we can use the expression: 
Researchers recommend that a person reach approximately 85% of his or her MET when exercising. Calculate 85% of the ideal MET for a 60-yr-old woman. Then refer to the following table. What activity can the woman do that is approximately this value? 
A. 8.1; Swimming B. 6.885; Cycling C. 6.885; Skiing D. 8.1; Skiing
Find the value for the function.Find f(-x) when f(x) = -3x2 - 2x + 4.
A. 3x2 + 2x + 4 B. 3x2 + 2x - 4 C. -3x2 + 2x - 4 D. -3x2 + 2x + 4
Divide using long division.
A. x2 + 4x + 3 B. x2 - 4x - 3 C. 5x2 - 4x - 3 D. 5x2 - 3