Answer: 
Step-by-step explanation:







Answer: x = 56
It’s a supplementary angle
Step-by-step explanation:
It’s a supplementary angle if their measures add to 180 degrees
is the equation
2x + 68 = 180 degrees
2x = 180 -68
2x = 112
x = 112/2
x = 56
Answer: She bought 68 books.
Step-by-step explanation:
Subtract 31 from 99 to find the difference! The difference tells us how many books she bought at the yard sale.
I think the answer would be the second one or B. the number of hours billed
Answer:
x+19
Step-by-step explanation:
3x+12 - 2x+7 = x+19