Bill stood outside the mall and asked every fourth person to enter the mall for their favorite sport. there were four choices: football, baseball, basketball, and other. bill surveyed a total of 54 people. of those surveyed, 14 said football is their favorite, 13 said baseball is their favorite, 12 said basketball is their favorite, and 15 said other.
identify the sample in the situation above.
everyone who likes basketball
every fourth person entering the mall
everyone who likes football
everyone entering the mall

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?