How do I find this? I don't know how to find the answer and would really appreciate the help!

∠EFG = 108 degrees

Step-by-step explanation:

Linear pairs are supplementary

∠EFG + ∠GFH = ∠EFH

5x + 18 + 4x = 180

9x + 18 = 180

     -18      -18

9x = 162

 9      9

x = 18

∠EFG = 5x + 18

∠EFG = 5(18) + 18

∠EFG = 90 + 18

∠EFG = 108

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

look at photo