Rath Understanding Complex
Problem 28 7.873, 7EE 4d
Cory is selling his bicycle, which he bought originally for $244. He asks his
friend, Alan, to help him sell the bike. Cory agrees to give Alan $23 plus
25% of the money that is received from the sale of the bike, IL Alan tells
Cory that he is owed $104.78, then what was the selling price of the bike?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?

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?