What is the domain of the function represented by the graph? On a coordinate plane, a line goes through (0, negative 2) and (4, negative 1).
all real numbers
Negative 4 less-than-or-equal-to x less-than-or-equal-to 4
Negative 3 less-than-or-equal-to y less-than-or-equal-to negative 1
y less-than 0

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?