2. Tana and her 2 friends went to the store to buy some cookies! YUM! Each friend buys one sugar cookie and one cinnamon sugar cookie. Tana only
purchases one chocolate chip cookie.
Chocolate Chip $3
Sugar Cookie
$2
Cinnamon
$1
Sugar
a. Use the pricing chart above to find how much they spend altogether. Write
equations using letters to represent the unknown. Solve. (hint: Think about
each cookie individually first!)
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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?