Which table shows a proportional relationship?

a r 3 6 10 12 15
s 2 4 6 8 10

b p 1 3 5 7 9
q 0 2 4 6 8

c x 1 2 3 4 5
y 9 10 11 12 13

d b 1 4 5 7 11
c 3 12 15 21 33

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?