Simplify $(r^2 + 3r - 2) - (r^2 + 7r - 5)$.

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30