The inequality that can be used to find the number of cars, x, Mr. Schwartz builds before he places an order for more wheels is 85 - 4x < 40.
The equation that represents the inequality is:
week's order - total number of tires used < 40
85 - (4x) < 40
85 - 40 < 4x
x < (85 - 40) / 4
x < 9
To learn more about inequality, please check: https://brainly.com/question/5031619
#SPJ1