Ineed to know how to solve these simple interest word problems step by step. 1. what is the new balance of your account after 8 months if you earn 2.7% on your balance of $13,132? (by the way, i’ve tried .66 and .67 for time and it doesn’t give us our answer apparently : /) 2. last year you earned $273.47 in interest for your online savings account. if your starting balance was $8,546, what was your interest rate?

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?