Write down the integer values of x where 1 < x < 7

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.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2