Question

Using the formula, y = 3(1.1)x, what distance, in miles, will Erica be running in 10 weeks? Round to the nearest mile.
A. 7
B. 8
C. 9
D. 10

Answer 1

B

Note: 7.78 rounds to 8

7.78 = 3(1.1)^10

Answer 2

Do you have a calculator? replace x with 10 and figure it out.