The length of a rectangle is 4 cm less than three times its width. If the area is 15 cm", find the dimensions of the rectangle

Anyone know? will mark brainliest if you're correct!

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).