A pool is being filled at a rate of 20 4/5 gallons every 1/4 of an hour. Express this rate as a unit rate.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Don't know how to find x given these segment lengths