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5) B

She inital pay $200 then ahs to pay 22.50 per play.

So Cost = 200 +22.5n

6) D

C = 9 + 2n  Base price is 9 and toppings increase preice by 2 for every topping.

7) D

24 + 6 x = 120

6 x = 120 - 24

x = (120 -24) / 6

x = 16 Hours

8) D

When s = 0 Temperature is 50

When s = 5 Temperature is 0

When you plug in the values into Equation D the values work.

9)

Service Call= $50

Hourly = $25

Repair Cost = Service Call + 25 x Hour

y  = 50 + 25x

When x = zero then y = 50

when x = 1 then y = 75

Plot two points:

(0,50) and (1, 75)  then draw a straight line through those two points all the way up and down.

Step-by-step explanation:

step-by-step explanation: