Find an exponential model for the following data set. Round your answer to two decimal places.
t 0 3 6 9 y 77.09 56.20 40.97 29.87?
A. 
B. ?
C. ?
D. ?
Answer: A
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Convert as indicated. When necessary, round to the nearest tenth of a degree.In a European cookbook, a recipe requires a mixture for candy to be heated to 
but the cook only has access to a Fahrenheit thermometer. Find the temperature in degrees Fahrenheit that should be used for making this candy.
A. 259.2° F B. 233.6° F C. 242.8° F D. 80° F
Evaluate.-5xy + 10y - 7 for x = -2, y = 1
A. 13 B. -7 C. 27 D. 20
Give the equation of the horizontal asymptote, if any, of the function.g(x) = 
A. y = 9 B. y = 1 C. y = 0 D. no horizontal asymptotes
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