Penny's son Chase wanted to go to the driving range to hit some golf balls. Penny gave the pro-
shop clerk $60 for three buckets of golf balls and
received $7.50 in change. What was the cost of
each bucket?

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

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?

What are two numbers that have a sum of 15