Question

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Answer 1

Understanding:

[Q1] f(x) represents the money Philip owes his friend while x being the time in months. When x was zero, Philip owed his friend a total of $1080. Therefore, the answer is D.

[Q2] You can calculate the slope by using the following formula
`m=(y_2-y_1)/(x_2-x_1)`, by using any 2 points on the graph we can easily calculate the slope.

`m=(810-1080)/(6-0)=(-270)/(6)=-45`

Solutions:

[Q1] D. Philip paid a total of $1080 for the car

[Q2]
`m=-45`

[Q3] The slope represents the amount Philips pays his friend monthly.

Answer 2

1. D. He paid total of $1080
2. (810-1080)/(6-0) = -45
The slope is -45
3. Slope means how much less he owes per month