You are making cookies for a large party and need to triple the recipe. (you do this
quite often.) make a new recipe card, for a triple batch, to put in your recipe box.
original recipe
1 1/4 cups peanut butter
1 2/3 cups sugar
1/2 tsp salt
2 1/2cups flour
1/4 cups butter
1 1/2 tsp vanilla

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?