1.At a little-known vacation spot, taxi fares are a bargain. A 28-mile taxi ride takes 36 minutes and costs $25.20. You want to find the cost of a 44-minute taxi ride. What unit price do you need? 2. A warehouse store sells 6.5-ounce cans of tuna in packages of 8. A package of 8 cans costs $13.52. The store also sells 4.5-ounce cans of the same tuna in packages of 3 A package of 3 cans costs $2.97. The store sells 5.5-ounce cans in packages of 6 cans for $9.90. Which package is the best buy?

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?