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faust18 [17]
3 years ago
11

Michael started a savings account with $300. After 4 weeks, he had $350 dollars, and after 9 weeks, he had $390. What is the ave

rage rate of change of money in his savings account per week.
Mathematics
1 answer:
matrenka [14]3 years ago
5 0

1) with two points  you  can get the average rate of change

r=  390- 350 / 9-4 = 8, it means the average  of  rate per week

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