On a airplane, there are two seats on the left side in each row and there seats on the right side. there are 90 seats on the right side of the plane how many seats are on the left side of the plane?

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

What is the range? can’t seem to find it out

Factor and solve to find roots x squared -x - 90 =0