Question

The question is in the picture below
pls don't troll

Answer 1

Option (4)

Explanation:

We Fix it Computer Repair charges for it's services as per equation given as,

C = 30h + 90

Here, C = Total cost

h = Number of hours worked

This equation is in the form of a linear equation,

y = mx + b

Here, m = slope of the equation

And slope of the equation defines the unit rate

Therefore, charges for each hour of the first company = $30

Table given in the question represents the charges of another company John's Compute Repair.

There is a common difference in each successive term of the Total Cost of the table,

Common difference = 100 - 55 = 45

Therefore, this table represents a linear function.

Slope of the linear function passing through
`(x_1,y_1)` and
`(x_2,y_2)` is given by the expression,

Slope =
`(y_2-y_1)/(x_2-x_1)`

Slope of the function represented by the table =
`(100-55)/(2-1)`

= 45

Therefore, per hour charges by the second company = $45

Difference in the charges = $45 - $30

= $15

John's Computer Repair charges more by $15.

Option (4) is the correct option.