Liz is shipping a package to her friend. The maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. Write and solve an inequality to describe the possible weight in pounds, w, of the contents that Liz will ship to her friend if she must use a medium flat-rate box. Use the drop-down menus to explain your answer. The weight of the box and the weight of the contents of the box must be
20 pounds. So the situation can be solved by the inequality w 191016⋅The contents of the package can weigh 19 pounds 10 ounces.

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?