The history club has $171 with which to buy historical
fiction books. club members have already spent $15 on
bookmarks. if each book costs $12, how many books can
the club buy?

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

16 more than the product of 5 and 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?