2. richmond appliance repairs washing machines. the revenue that the company earns is given by the function r(h) = 20 + 45h dollars for every h hours spent repairing washing machines. the company’s overhead cost is given by the function c(h) = 5h2 – 30 dollars. for what number of hours does the company break even? show your work.

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Two florida panthers were weighed. one weighs 6x+21 pounds and the two together weigh 14x+11 pounds how much does he other panther weigh alone

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?