Worth as lot of points.

1. create your own question that could appear on the test for this unit. the question can be about adding, subtracting, multiplying, or factoring polynomials. solve your own problem to make sure that the question has a solution

2. what are two pieces of mathematical advice you have for a classmate who’s about to take an assessment on the content you learned in this unit? think about what types of mistakes are common when adding, subtracting, multiplying, or factoring polynomials.

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?