Question

Under Plan A a 2 minute call costs .54 cents a 4 minute call costs 1.08. Under plan b the cost for x minutes is given by y=0.289x. Which plan is cheaper? Why?

Answer 1

Answer: Plan A is cheaper, because the cost of a 2-minute call and a 4-minute call is less than the cost of a 2-minute call and a 4-minute of Plan B call.

Explanation:

1. You have the following information of Plan A:

- A 2 minute call costs .54 cents.

- A 4 minutes call costs $1.08.

2. For Plan B, you know that the cost of
`x` is given by the equation:

`y=0.289x`

3. Therefore, you can compare both plans by finding the cost of a call of 2 minutes and a call of 4 minutes of Plan B. You can calculate this by giving these values to
`x`:

`x=2\\x=4`

4. Substitute the values into the equation:

`y=0.289(2)=0.578cents` (This is more expensive)

`y=0.289(4)=1.156dollars` (This is more expensive)

5. Therefore, Plan A is cheaper, because the cost of a 2-minute call and a 4-minute call is less than the cost of a 2-minute call and a 4-minute of Plan B call.