Adonut shop is experimenting with two new types of cream-filled treats, one with raspberry filling, and the other with peach. a batch of raspberry donuts cooks in 11 minutes while a batch of peach donuts cooks in only 8 minutes.
let x represent the number of raspberry-filled donuts and let y represent the number of peach-filled donuts. write an inequality to represent how many batches of the new type of donuts can be produced in a 10 hour day.

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?