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Question
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Matthew is saving money each week. Matthew's savings are represented by the table belor Find the rate of change.
Matthew's Savings




Weeks 
(x)
Total Savings 
(y)


3

$82


5

$122


7

$162


9

$202




Answer Attempt 1 out of 2

$ 
◻ per week
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Question\newlineWatch Video\newlineShow Exam\newlineMatthew is saving money each week. Matthew's savings are represented by the table belor Find the rate of change.\newlineMatthew's Savings\newline\begin{tabular}{|c|c|}\newline\hline Weeks (x) (x) & Total Savings (y) (y) \\\newline\hline 33 & $82 \$ 82 \\\newline\hline 55 & $122 \$ 122 \\\newline\hline 77 & $162 \$ 162 \\\newline\hline 99 & $202 \$ 202 \\\newline\hline\newline\end{tabular}\newlineAnswer Attempt 11 out of 22\newline$ \$ \square per week\newlineSubmit Answer

Full solution

Q. Question\newlineWatch Video\newlineShow Exam\newlineMatthew is saving money each week. Matthew's savings are represented by the table belor Find the rate of change.\newlineMatthew's Savings\newline\begin{tabular}{|c|c|}\newline\hline Weeks (x) (x) & Total Savings (y) (y) \\\newline\hline 33 & $82 \$ 82 \\\newline\hline 55 & $122 \$ 122 \\\newline\hline 77 & $162 \$ 162 \\\newline\hline 99 & $202 \$ 202 \\\newline\hline\newline\end{tabular}\newlineAnswer Attempt 11 out of 22\newline$ \$ \square per week\newlineSubmit Answer
  1. Calculate Rate of Change: To find the rate of change, we need to calculate the difference in savings divided by the difference in weeks. We can use any two points from the table to do this. Let's use the first and last points for our calculation.
  2. Identify Data Points: The first point is 3 weeks,$$823\ weeks, \$\$82\) and the last point is 9 weeks,$$2029\ weeks, \$\$202\). The change in savings is $202$82\$202 - \$82, and the change in weeks is 939 - 3.
  3. Find Differences: Now we perform the subtraction to find the differences: Change in savings = $202\$202 - $82\$82 = $120\$120, and change in weeks = 99 - 33 = 66 weeks.
  4. Divide for Rate: Next, we divide the change in savings by the change in weeks to find the rate of change: Rate of change = $120/6\$120 / 6 weeks = $20\$20 per week.
  5. Interpret Result: This rate of change means that Matthew is saving $20\$20 each week. This is the final answer.

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