See below for the solution of each question
The equation of the model
The points are given as:
(3,60) and (5, 80)
The equation is calculated as:
[tex]C(n) = \frac{C_2 -C_1}{n_2 -n_1} * (n - n_1) + C_1[/tex]
This gives
[tex]C(n) = \frac{80- 60}{5-3} * (n - 3) + 60[/tex]
Evaluate the quotient
C(n) = 10 * (n - 3) + 60
Expand
C(n) = 10n - 30 + 60
Evaluate
C(n) = 10n + 30
Hence, the relation of total cost, C, and number of hours, n is C(n) = 10n + 30
Explain the points on (3, 60)
The point (3, 60) means he paid $60 for 3 hours
The equation of the model for Comput-Repair
Here, we have:
Fixed = $10
Hourly rate = $15
The equation is calculated as:
C(n) = Fixed + Rate * Number of hours
This gives
C(n) = 10 + 15n
Hence, the relation of total cost, C, and number of hours, n is C(n) = 10 + 15n
The graph of the fee structure for Compu-Repair
The equation is represented as:
C(n) = 10 + 15n
See attachment for the graph
The coordinates of the point of intersection
This is the point where the two lines intersect.
From the graph, we have the point of intersection to be:
(n, C(n)) = (4, 70)
The meaning in this scenario
This means that the charges for Comput-Repair and Data-Fix are the same after 4 hours
Advice Jargit
Based on the point of intersection, it is best that Jargit uses Compu-Repair because they have a lesser hourly rate
Read more about linear functions at:
https://brainly.com/question/4025726
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