The School Dance - The Problem Last year, three 6th grade students, Aliya, Crystal, and Shamika, were selling balloons at the school's Winter Dance to collect money for a class trip to Spain. Aliya sold two more balloons than Crystal, and Shamika sold twice as many balloons as Crystal. Let b represent the total number of balloons Crystal sold. Annotate the problem for key number, keywords, variables.​

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

Which of the following can be used to explain a statement in a geometric proof?

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?