9) Lucy owes the bank $500. She has $100 and plans to save $25 each month to pay the bank back. a) Generate the sequence for the scenario.
b) Determine the common ratio or common difference.

Fast! find the length of cu. the triangles are similar. show your work.

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?

The perimeter of a quarter circle is 14.28 miles. what is the quarter circle's radius?