The accountant charged $35 for the first hour of work and $23 for each hour after that. he earned a total of$127 how many hours did he work

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

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?

If f(x)=-3x+2 and g(x)=-7x-2, which point represents f(x)=g(x)?