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watch the video it would help you understand what to do.
Hello! To find the average of something, multiply the total of something by the number of units. In this case, we divide the total bill by 5 people to get the average cost per person. 203.25/5 is 40.65. There. The average cost of dinner per person was $40.65.
Answer:

Step-by-step explanation:

Adding 2a to both sides

Taking sqrt on both sides

the rectangle is but the line is not because the line has to have another side !