Question

What is f(r) = 60 - 2/3 r when r =12?

Answer 1

F(r) = 60 - 2/3r        r = 12 
Substitute r for 12

f(12) = 60 - 2/3(12)                       12 * 2/3 = 8 

f(12) = 60 - 8 

f(12) = 52  

52 is your answer

 <span />