81 B;
4 ft
51
A. 90 square feet
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B. 102 square feet
C. 87 square feet
D. 75 square
felet

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Which of the following is missing in the explicit formula for the compound interest geometric sequence below?

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?