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Vilka [71]
3 years ago
9

The cost for a certain music plan is 9.99 per year plus $.025 per song you download if you paid $113.74 one year find the number

of songs downloaded
Mathematics
2 answers:
Reika [66]3 years ago
8 0
Try to make a function
garri49 [273]3 years ago
6 0
Y=amount of money paid.  (in $)
x=number of songs download.

We have this function:
y=0.25x+9.99

Then:
if y=113.74

113.74=0.25x+9.99
0.25x=113.74-9.99
0.25x=103.75
x=103.75 / 0.25
x=415

Answer: the number of songs downloaded would be 415.
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Step-by-step explanation:

<u><em>Explanation</em></u>:-

<em>Type of Transformation                              Change to co-ordinate point</em>

<em></em>

<em>Vertical translation up 'd' units                         (x, y) → (x , y+d)</em>

<em>Vertical translation down 'd' units                    (x, y) → (x , y-d)</em>

<em>Horizontal translation left 'c' units                  (x ,y ) → (x - c , y)</em>

<em>Horizontal translation right 'c' units              (x ,y ) → (x + c , y)</em>

<em></em>

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