Question

If f(x)= 5x+4 and g(x)= -2+1...... 1) f(6) + g(-8) = ? 2) g(4)= ? 3) f(-2)= ? PLZ PLZ PLZ HELP ME I AM SOOOOO CONFUSED!!!!!!!!!!!

Answer 1

See below.

Explanation:

So we have the two functions:

`f(x)=5x+4\text{ and } g(x)=-2x+1`

1)

First, find the values of each function:

`f(x)=5x+4\\f(6)=5(6)+4\\f(6)=30+4=34`

`g(x)=-2x+1\\g(-8)=-2(-8)+1\\g(-8)=16+1=17`

Therefore:

`f(6)+g(-8)\\=(34)+(17)=51`

2)

Plug in the number into the function:

`g(x)=-2x+1\\g(4)=-2(4)+1=-8+1=-7`

3)

Like the last one:

`f(x)=5x+4\\f(-2)=5(-2)+4=-10+4=-6`