Question

problem 7.1:
a cell phone plan costs $200 to start.
then there is a $50 charge each month.
what is the total cost (startup fee and
monthly charge) to use the cell phone
plan for 2 months?

problem 7.2:
a cell phone plan costs $200 to start.
then there is a $50 charge each month.
write an equation to represent the total cost,
y, to use the cell phone plan for x months.
equation:
y = _x + _

Explanation:

Problem 7.1

Step1: Identify costs

Startup fee: $200, Monthly charge: $50 per month. For 2 months, monthly total: \( 50 \times 2 \).

Step2: Calculate total cost

Total cost = Startup + (Monthly × Months) = \( 200 + (50 \times 2) = 200 + 100 = 300 \).

Step1: Define variables

Let \( x \) = months, \( y \) = total cost.

Step2: Form equation

Startup fee (\$200) + (Monthly charge (\$50) × months \( x \)) = total cost \( y \). So \( y = 50x + 200 \).

Answer:

\$300

Problem 7.2