Which of the following best describes the expression 7(y+5)

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

How do you do the foil method with polynomials?