Alex sells cars at Keith Palmer ford. He earns $400 a week plus $150 per car he sells. If he ea Ned $1450 last week, how many cars did he sell?

He earns $400 per week.

In addition, he gets $150 per car (x).

"x" is the number of cars.

400 + 150x

If he earned $1450 last week, then

400 + 150x = 1450

First, subtract 400 from both sides.

150x = 1050

Now divide both sides by 150.

x = 7

Alex sold 7 cars last week.