Rayan is building a tree house. He has 18 feet of wood to use. He uses three-fourths of a foot of wood to make each step for the ladder. If he has 15 feet of wood left, how many ladder steps did he make ?

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

It says factor each expression 49x-28?