The average salary for a welder is $36,600 per year. a lawyer makes on average $113,530. if you consider the earning potential of both over a 30 year period, what is the difference between the welder's earnings as compared to the lawyer's wages? $76,930$984,470$2,307,900$3,369,300

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Aparking garage charges $1.12 for the first hour and 0.50 for each additional hour. what is the maximum length of time tom can park in the garage if we wishes to play no more than $5.62

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?