Christy rented a banquet hall for her company party. there was a non-refundable deposit of $300 to reserve the space and an $85 fee for decorations. the banquet hall charged $27 per person for food. their total bill was $2,653 for b employees.

choose an equation that represents the total cost of the company party. then, choose the number of employees that attended the party.

a. 27b + 385 = 2,653
b. 27b - 385 = 2,653
c. 412b = 2,653
d. 84 employees
e. 7 employees
f. 112 employees

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?