Earl earns a salary of $150 plus 20% of the amount of his sales for the week. Last week he earned $230. This equation can be used to find S, the amount of his sales in dollars last week. 230=150+0.2s
230-150= 80
80/0.2=400
s=400
CHECK YOUR WORK-
230=150+0.2(400)
230=150+80
230=230
Answer:
The third one is the right one.
230 = 150 + 0.2s
= $400 < answer
Step-by-step explanation: