Solve for x. 85 = −6x + 7 + 4x a. 78 b. 39 c. −39 d. −78

           x = -39

Step-by-step explanation:

85= -6x+7+4x      combine like terms (-6x, 4x)

85= -2x+7            subtract 7 from both sides

78= -2x                  divide both sides by -2

x= -39        

-39

Step-by-step explanation:

combine like term.

85= -2x+7

1st subtract 7 from both sides

78=-2x

then divide both sides by -2

-39=x

the answer for this question is 38

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2