Help! ^_^

A business consultant earns a flat fee for his work as well as an hously fee. He charges his clients at a rate of $75 per hour. In one week, he billed a client $1,800 for 20 hours worked. Which of the following equations describes the pay for the consultant in terms of hours worked?

a. y=20x-300
b. y=20x+300
c. y=75x-300
d. y=75x+300

Question

Help! ^_^

A business consultant earns a flat fee for his work as well as an hously fee. He charges his clients at a rate of $75 per hour. In one week, he billed a client $1,800 for 20 hours worked. Which of the following equations describes the pay for the  consultant in terms of hours worked?

a. y=20x-300
b. y=20x+300
c. y=75x-300
d. y=75x+300

jim_thompson5910 · Answer

"He charges his clients at a rate of $75 per hour"

so m = 75

which means 

y = mx+b

becomes

y = 75x+b

jim_thompson5910 · Answer

"he billed a client $1,800 for 20 hours worked" tells us that when x = 20, y = 1800

So 

y = 75x+b

turns into

1800 = 75*20+b

Solve that for b

Then use m = 75 and that value of b to find the equation

anonymous · Answer

I like have no idea how you do this ! :/

jim_thompson5910 · Answer

which part are you stuck on?