Solving Inequalities: Multiplication and Division

Question

The French club is sponsoring a bake sale. If their goal is to raise at least $135, how many pastries must they sell at $3.00 each in order to meet that goal? Write and solve an inequality.

 

a) 3.00p ≥ 135; p ≥ 45

b) 3.00p ≥ 135; p ≥ 405

c) 135p ≥ 3.00; p ≥ 45

d) 3.00p ≥ 135; p ≥ 132

Answer 1

If all the choices A through D, which has a P value that will be equal to or greater than $135?

 

For example, choice C has a P value of equal to or greater than 45. If we substitute P for 45 in the accompanying equation, we get 135 X 45 which equals $6,075. This amount is obviously greater than $135, but our answer must be equal to or greater than $135. So C is not the correct answer. Try choice A.