Solve the problem.Find the exponential function that models the data in the table below.
A. f(x) = 22 ? 0.7x
B. f(x) = 10.78 ? 0.7x
C. f(x) = 10.78 ? 1.3x
D. f(x) = 15.4 ? 1.7x
Answer: B
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Select the smaller of the two given numbers.12, 
A. 12
B. 
Use a calculator with a 
key to solve the problem.The function f(x) = 90e-0.2x + 10 models the percentage of information, f(x), that a particular person remembers x weeks after learning the information. a) Substitute 0 for x and, without using a calculator, find the percentage of information remembered at the moment it is first learned. b) Find the percentage of information that is remembered after 4 weeks. Round to the nearest thousandth of a percent.
A. a) 10%; b) 10.449% B. a) 50%; b) 210.299% C. a) 90%; b) 40.440% D. a) 100%; b) 50.440%
Select the smaller of the two given numbers.18, ?-30?
A. ?-30? B. 18
Translate using numbers and symbols.a number plus seven
A. x + 7 B. x × 7 C. 7x D. x - 7