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Alla [95]
4 years ago
12

3: Keith purchases a cell phone plan, which includes a cell phone and cell phone service. He makes a deposit of $100 for the cel

l phone and then pays $45 per month for the cell phone service. ​ A. Create an equation to model the total amount of money, y, in dollars, Keith spends on the cell phone and plan after x months. B. How much money does Keith spend per year for cell phone service?
Mathematics
2 answers:
IrinaVladis [17]4 years ago
8 0

Answer:

A.  y = 45x + 100

B. $ 540

Step-by-step explanation:

y = 45x + 100

y = 45 x 12 + 100

y = 540 + 100

540 is your answer because it asks for yearly rate not total rate.

Masja [62]4 years ago
8 0

Answer:

y = 100 + 45x

$640

Step-by-step explanation:

y = 100 + 45x

One year = 12 months

y = 100 + 45(12)

y = 100 + 540 = 640

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