9514 1404 393
Answer:
x^2 +4x -21
Step-by-step explanation:
Substitute the given expressions and simplify.
f(x) + g(x)
= (x^2 +3x -28) +(x +7)
= x^2 +(3+1)x +(-28 +7)
= x^2 +4x -21
$-36
-42+6
-36
Length: 9 inches
Width: 3 inches
Answer: D
36,686
5.88 x 12 over 10 = 240
240 x 26 = 36,686
