Abuilding in a city has a rectangular base. the length of the base measures 70 ft less than three times the width. the perimeter of this base is 940 ft. what are the dimensions of the base?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Could someone me with this question i’ve been stuck on it for 20 minutes

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?