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Mama L [17]
3 years ago
8

For a yearly fee, the Music Download Club gives 30 music downloads for initially signing up and allows 25 music downloads per mo

nth.
Let y be the dependent variable for the total number of music downloads and let x be the independent variable for the number of months.

Write a function rule that describes the situation.
Mathematics
1 answer:
Mice21 [21]3 years ago
7 0
Y = 25x + 30...or f(x) = 25x + 30
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Further explanation:

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ΔABC≅ΔDFE

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EF=BC\\Putting\ the\ values\\x+15=2x+5\\x-2x=5-15\\-x=-10\\x=10\\AND\\FD=AB\\Putting\ the\ values\\4y=8y-20\\4y-8y=-20\\-4y=-20\\\frac{-4y}{-4}=\frac{-20}{-4}\\y=5\\AND\\ED=AC\\10z-5=3z+9\\10z-3z=9+5\\7z=14\\\frac{7z}{7}=\frac{14}{7}\\z=2

Hence, the values of x, y and z are as follows:

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Keywords: Similar triangles, Congruent Triangles

Learn more about congruent triangles at:

  • brainly.com/question/4924817
  • brainly.com/question/5720422

#LearnwithBrainly

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