Chapter 3
1.) when martha's brother george spilled milk on her math homework, most of the ink
smeared beyond recognition. martha could only see two points left in her table of
values, (5, 8) and (12,36). martha still had to find the equation representing the values
in her table, but now, with only two data points, she is not sure she can.
martha out! identify what information martha needs for her equation and
calculate the equation for her.

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?