1819 T1W09 Math GRO6 Assessment Task 01 v01
Use the following information to answer questions 4 and 5
Wells College in Aurora, New York was previously an all-girls college. In 2005, the college began to allow boys
to enroll. By 2012, the ratio of boys to girls was 3 to 7.
4. Write an equivalent ratio to 3 boys for every 7 girls. Prove that the ratios are equivalent and include
appropriate labels. (2 points)

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?