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Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
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Aubrey wrote a business plan for an entrepreneurship class, and now she has to make bound copies. Aubrey could use a printer who charges a setup fee of $38 and $3 for every copy printed. Another possibility is to go to the office supply store, where she could pay an up-front fee of $34 and $4 per copy. There is a certain number of copies that makes the two options equivalent in terms of cost. How much would the copies cost? How many copies is that?


Sagot :

Answer:

Copies cost for the first case = $ 12

Copies cost for the second case =$16

Number of Copies = 4

Step-by-step explanation:

Let the number of copies = N

. for the first case: total cost (T1) = 38 + 3N

. for the second case: total cost (T2) = 34 + 4N

Determine the ‘N’ when the cost is equivalent

So, 38 + 3N = 34 + 4N

38 – 34 = 4N – 3N

N = 4

Therefore, number of copies = 4

Copies cost for the first case = 3 × 4 = $12

Copies cost for the second case = 4 × 4 = $16

#1.

  • Set up fee=$38
  • Cost per copy=$3

Expression

[tex]\sf\longmapsto 38+3x[/tex]

#2

  • Set up fee=$34
  • Cost per copy=$4

Expression

[tex]\sf\longmapsto 34+4x[/tex]

Now

[tex]\sf\longmapsto 4x+34=3x+38[/tex]

[tex]\sf\longmapsto x=4[/tex]

There were 4copies