An inequality is shown below: −np − 5 ≤ 4(c − 2) which of the following solves for n? a.) n ≥ − the quantity 4 times c minus 3 all over p b.) n ≥ − the quantity 4 times c minus 13 all over p c.) n ≤ − the quantity 4 times c minus 3 all over p d.) n ≤ − the quantity 4 times c minus 13 all over p

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?