A car dealer buys a car for $500, and then sells it for $640. What is the percentage profit?
is sold for $100.

Abbey purchased a house using a fixed rate mortgage. the annual interest rate is 4.2% compounded monthly for 20 years. the mortgage amount is $235,000. what is the monthly payment on the mortgage? this isn't a multiple choice question have to show my work

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?