Martin wants to plot a graph to show the prices of different numbers of helmets. he has to plot the following points: (1, 24.97), (2, 49.94), (3, 74.91), (4, 99.88) which of the following best describes how the y-axis should be labeled? from 0 to 300 at intervals of 50 from 0 to 100 at intervals of 25 from 0 to 500 at intervals of 100 from 0 to 80 at intervals of 10

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?