How does the graph of f(x) = |x| compare with the graph of g(x) = −2|x|
A).The graph of g is a vertical compression and reflection over the y-axis of the graph of f.
B).The graph of g is a vertical stretch and reflection over the x-axis of the graph of f.
C).The graph of g is a vertical compression and reflection over the x-axis of the graph of f.
D).The graph of g is a vertical stretch and reflection over the y-axis of the graph of f.

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?