I need help as soon as possible please! Show your work step by step. You and a friend share the driving on a 280 mile trip. Your average speed is 58 miles per hour. Your friend’s average speed is 53 miles per hour. You drive one hour longer than your friend. How many hours did each o of you drive? Use the following verbal model. (In picture)

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?