Which expression is equivalent to the given polynomial expression? (924 + 2) + 2(0222 + 2w3 – 2v2) - (-13v2w3+724)
OA 16v6w5 + 2
OB. 14,4 + 16v6w5 + 2
OC. 0422 + 150223 + 2
OD. 1404 + 1472 + 150223 + 2

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?