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

Question

Mathematics

Addyson Buck

16 April, 02:19

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

+1

Answers (2)

Know the Answer?

Amanda Nixon · Answer 1

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.

Valery Dillon · Answer 2

y = 100 + 45x

$640

Step-by-step explanation:

y = 100 + 45x

One year = 12 months

y = 100 + 45 (12)

y = 100 + 540 = 640