Which graph could represent y, the amount owed on a car loan, as regular payments are made each month, x?

Y=4x^2+x-1 solve using quadratic formula

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.