The area of a rectangle (x^3-5x^2+13-15), and the width of the rectangle is (x^2+3). If area = length x width, what is the length of the rectangle?

Pls! does anybody know a shortcut for answering these types of questions in the future?

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?