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kondaur [170]
2 years ago
13

Betty is having invitations printed for a holiday party. It costs $3.90 to set up the printing machine and $2.44 per invitation.

In the equation below, x represents the number of invitations Betty is having printed, and y represents the cost to print the invitations.
y = $2.44x + $3.90

How much will it cost Betty to print 100 invitations?
A.
$392.44
B.
$251.80
C.
$103.90
D.
$247.90
Mathematics
1 answer:
liraira [26]2 years ago
3 0

Answer:

D) $247.90

Step-by-step explanation:

<h3>Understanding the equation:</h3>

\underline{\sf{y = 2.44x + 3.90}}

y is the dependent function whereas x is the independent function.

(<em>What</em><em> </em><em>does</em><em> </em><em>this</em><em> </em><em>mean?)</em>

The values of y depend on the values of x, I.e., any change in the value of x causes a change in the value of y, meanwhile, the opposite doesn't happen.

  • x represents the number of invitations
  • y represents the cost to print the invitations

The cost to print the invitation depends on the number of invitations, for real.

<h3>Solution to the problem:</h3>

The question asks us to find the cost of printing 100 invitations.

Substituting x for 100:

y = (2.44 × 100) + 3.90

y = 244 + 3.90

y = 247.90

<h3>Answer:</h3>

The value of y obtained for x = 100 is the cost of printing 100 invitations – $ 247.90

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