HELLP!!! For Spring Break, the Alpha Plus staff is planning a team building trip for Spring Break in Tahlequah, Oklahoma. On one day, they plan to float down the Illinois River. Fannie’s Floatables charges a $55 reservation fee and $12.50 per raft. Ricky’s River Rats charges a $30 reservation fee and $15 per raft. Write a function to show the cost of each business. For what number of rafts would the cost be the same?

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?