Five years after it was purchased, a car had lost 2/5 of its original value. The value of the car five years after it was purchased can be represented by the expression v-3/5v where v is the original value of the car. Which of the following describes another way to find the value of the car five years after it was
purchased?

A: Adding 2/6 to the original value

B: Subtracting 2/5 from the original value

C: multiplying the original value by 2/5

D: dividing the original value by 2/5

WILL GIVE BRAINLIEST IF ANSWERED

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?