If f(x) = 3x and g(x)=2x, what is (gf)(x)?

6x

Step-by-step explanation:

we shall go right to left in the function

g(3x)

2(3x)

6x

Step-by-step explanation:

Given:

Find (g*f)(x):

If you are looking for (g·f)(x), then it is:

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

28

step-by-step explanation:

8+8+6+6