Abusiness consultant earns a flat fee for his work as well as an hourly fee. he charges his clients at a rate of $75 per hour. in one week, he billed a client $1,800 for 20 hours worked. which of the following equations describes the pay for the consultant in terms of hours worked? a. y = 20x – 300 b. y = 20x + 300 c. y = 75x – 300 d. y = 75x + 300

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?