The function f(x) = x + 3 represents the length of a rectangle. the function g(x) = 12x − 5 represents the width of the rectangle. use (f • g)(3) to determine the area of the rectangle. 186 37 31 6

186-I just took the test and the first one is right.

Step-by-step explanation:

Replace x with 3 in both equations,then multiply the answers:

f(x)=x+3

f(3)=3+3

f(3)=6

g(x)=12x-5

g(3)=12(3)-5

g(3)=36-5

g(3)=31

6*31=186

Hope this helps :)

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

15 units use socratic

step-by-step explanation: 15 units