SOLUTION: You are saving money to buy a DVD recorder. The DVD recorder costs $380. You have already saved $170. You can save an additional $30 each month.
a. Write a variable expression t
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a. Write a variable expression t
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Question 947710: You are saving money to buy a DVD recorder. The DVD recorder costs $380. You have already saved $170. You can save an additional $30 each month.
a. Write a variable expression to represent the total amount of money you have saved after m months. Evaluate your expression for the first 6 months. Record your results in a table.
b. Use the data in part (a) to make a scatter plot. Put months on the horizontal axis and savings on the vertical axis. Use the graph to find the number of months it will take to save enough money for the recorder.
c. Write and solve an equation to find the number of months it will take you to save enough money for the recorder. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! You are saving money to buy a DVD recorder. The DVD recorder costs $380. You have already saved $170. You can save an additional $30 each month.
a. Write a variable expression to represent the total amount of money you have saved after m months.
170+30x
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Evaluate your expression for the first 6 months.
S(6) = 170 + 6*30 = 170+180 = 350
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Record your results in a table.
months/savings:: 0/170 ; 1/200 ; 2/230 ; 3/260 ; etc
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b. Use the data in part (a) to make a scatter plot. Put months on the horizontal axis and savings on the vertical axis. Use the graph to find the number of months it will take to save enough money for the recorder.
Note:: Such graphs
c. Write and solve an equation to find the number of months it will take you to save enough money for the recorder.
Solve:: 380 = 170 + 30x
210 = 30x
x = 7 months
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Cheers,
Stan H.
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