Answer:
x = 16
Step-by-step explanation:
Since vertical angles are equal, we can set these two expressions equal to each other to solve for x:
(1/2)x + 12 = (3/4)x + 8
12 = 0.25x + 8
4 = 0.25x
16 = x
First we need to find 75% of $450, so 450x.75=337.5
to find the markup we have to add 450+337.5 to get $787.5.
Step-by-step explanation:
5(-7)-2(-7+3)^2
=-35 - 2(-4)^2
=-35 - 2x16
=-35 - 32
=-67
Am i right? :o
