Question

The price charged to repair a computer

is $60, plus $50/h.

a) Write an equation representing this

relationship.

b) What is the total cost of a repair that

takes 3.5 h?

c) How would the equation change if

the hourly cost changed to $45?

Answer 1

A) Y = 50x + 60
B) y = 50(3.5) + 60 = 235
C) y = 45x + 60

Answer 2

Answer:

a) $y=50x+60$

b) Total cost of repair that takes 3.5 h = $235

c) $y=45x+60$

Step-by-step explanation:

Given:

Cost of repairing a computer = $60, plus $50/h

Let:

The cost of repairing a computer be taken as '$y$'

Time of repair in hours be taken as '$x$'

Solution:

a) $y = 60+50x$  or  $y=50x+60$

b) Given time, $x=3.5$

∴ Total cost of repair, $y= 50x+60$

                                       $= (50 \times 3.5) + 60$

                                       $= 175+60$

                                       $= 235$

Total cost of repair = $235

c) Cost per hour = $45

∴ $y=45x+60$

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