Which problem can be solved using this equation? 400+100c=550+70c
a. one car salesperson makes a monthly salary of $100,$100, plus $400$400 commission for each car sold.
the other car salesperson makes a monthly salary of $70,$70, plus $550$550 commission for each car sold.

for which number of cars, cc, do they make the same amount in one month?

b. one car salesperson makes a monthly salary of $400,$400, plus $100$100 commission for each car sold.
the other car salesperson makes a monthly salary of $550,$550, plus $70$70 commission for each car sold.

for which number of cars, cc, do they make the same amount in one month?

c. one car salesperson makes $500$500 for each car sold.
the other car salesperson makes $620$620 for each car sold.

for which number of cars, cc, do they make the same amount in one month?