The bill for dinner at a restaurant was $81.75. A sales tax of 7.5% was first added to the bill, and then an 18% gratuity will be added. What was the total bill for dinner? help

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

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?

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes