The figure to the right shows the graphs of the cost and revenue functions for a company that manufactures and sells small radio revenue function, R(x) = 55x; the dashed blue line represents the cost function, C(x) = 10,000 + 20x.
Use the formulas to find R(200) - C(200). Describe what this means for the company.

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?