Choose the system for the graph. (2x + 3y = 12
a)
13x - 5y < 15
(2x + 3y = 12
b)
13x - 5y = 15
(2x + 3y = 12
C
(3x - 5y > 15
(2x + 3y > 12
d)
(3x - 5y = 15
1

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?