Answer:
Equation will be 40x + 18(x - 3) = 468
Step-by-step explanation:
If 'x' represents the amount Michael collects from each repeat customers then amount collected from 40 customers = 40x
If he charged $3 less than the repeat customers then amount charged from 18 customers = $18(x - 3)
Total amount he collected = $468
Therefore, the equation modeling the situation will be
Amount collected from repeated customers + Amount collected from new customers = Total amount collected
40x + 18(x - 3) = 468