Hell meee
a local cable tv/internet/phone provider charges new customer $90 for all three services per month,
for the first year under their 90 now promotion. alice normally pays $59 for her monthly home phone
service, $29 for internet service, and $69 for cable television. what are her percent savings if she
switches to the 90 now plan? round to the nearest percent.

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?