Answer:
Write the equation as n + 31 = 113 and subtract 31 from both sides. The answer is 82.
Step-by-step explanation:
The sum of a number and 31 would be 'n + 31'. The sum equaling 113 would be '= 113'.
You would get 'n' by subtracting 31 for each side.

The statement: "Write the equation as n + 31 = 113 and subtract 31 from both sides. The answer is 82." should be the correct answer.
Since you don't know the value of b about the best that you could do is:
(2b)^4
16b^4
16b*b*b*b
Answer:
the vertices are all labeled
a b c d and e
I think
sqrt 7x^2 - 7*sqrt 49x
x sqrt7 - 7 (7) sqrtx
x sqrt7 - 49 sqrtx
We have to compute: Δ y / Δ x.
The interval is [ 2, 5 ] and y = 4 x - 9.
y 1 = 4 · 2 - 9 = 8 - 9 = - 1
y 2 = 4 · 5 - 9 = 20 - 9 = 11
Δ y / Δ x = ( y 2 - y 1 ) / ( x 2 - x 1 ) =
= ( 11 - ( - 1 ) ) / ( 5 - 2 ) = ( 11 + 1 ) / 3 = 12 / 3 = 4
Answer:
Δ y / Δ x = 4