Erika A.

asked • 11/17/21

How Can I Find the rate of change for each function of (Function C & Function D:) And How much more expensive is Function C than Function D if they talk for 200 minutes each?

Mandy's Monthly Cell phone bill is represented by the function y= 0.10 x+70 Where X represents the minutes and y represents the cost.

Angela's monthly Cell phone bill is represented by the function y=0.25 x + 30 Where X represents the minutes and y represents the cost.

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