How does the parabola whose function rule is f(x)=4x^2 compare to the parabola whose function rule is f(x)=x^2

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.

Evaluate this using ! 0.25^2 x 2.4 + 0.25 x 2.4^2 − 0.25 x 2.4 x 0.65

Identify the parent function that can be used to graph the function f(x)=3(x-9)2