Aplane climbs 20,000 feet to reach an elevation of 21,250 feet. write and solve an equation to find the elevation from which the plane took off.

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Solve the equation x/4 - 5= -8 -27 -12 -7 12

If f(x)=x+7 and g(x)=1/x what is (fog)(x)