Question

What is r(7) for the function r(n) = 0.009n

A. 0.0063

B. 0.0097

C. 0.063

D. 7.009

Answer 1

the answer is letter C

if you substitute 7 for n in the function 0.009(n) you end up with:

0.009(7) which is equal to 0.063

Answer 2

r(n) = 0.009n

Plug in 7 for n:

r(7) = 0.009(7)

r(7) = 0.063

Therefore, r(7) = 0.063, or answer choice C.

Hope this helps! :)