2x^2 - y when x + 3 and y = -2
2(3)^2 - (-2)
2(9) + 4
18 + 4
22
Hope this helps,
Brian
If you need help on how to solve an equation go to math.way
They are able to help you solve this and show you have to work it out.
Hello!

Use the following formula for the perimeter:
P = 2l + 2w, where:
l = length
w = width
Therefore:
P = 2(90) + 2(60)
Simplify:
P = 180 + 120 = 300 m
Answer:
50 miles per hour
Step-by-step explanation:
In this question, we are asked to substitute the information given into the equation. First we need consistency on units. Hence the 1hr 30 minutes is same as 1.5hrs
Now since d =rt
We need to get r = d/t
This means r = 75/1.5 = 50 miles per hour
2^5/2^2 = 2^(5-2)
= 2^3
= 8