4y^2+20y+25
Factor the polynomial completely

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.