I need help with these two problems. Use the given functions solve:

f(x)=6x+7. g(x)= -2x-4. h(x)= -3x/4

1. g(-6)

2. h(-12)

I also need help with this.

I attached the graph that goes along with the questions.

1. If Unit Produced is a function of Labor Hours,
f(5)=?

A. 3
B. 4
C. 8
D. 10

2. What can be determined, when f(x)=8?

A. Units produced are 5
B. Labor hours are 5
C. Units produced are 10
D. Cannot be determined