PLEASE HELP ON #2!! i am so lost

See below

Step-by-step explanation:

The first part is asking what you would do if f(x)=2 which means how do you solve for x to make the equation come out to be equal to 2.

2 = 8x + 10  simplifying, 8x = 2 - 10 or 8x = -8 and simplified even further,

x =  -1

The second part is asking what the equation would equate to if you replace x with 2.  This gives a totally different answer.

?  = 8(2) + 10  or   ? = 16 + 10  or finally  26

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm