Question

Talk the Talk Cellular charges a base rate of $20 per month for unlimited texts plus $0.15/minute of talk time. The monthly cost for x minutes is given by f(x) = 20+0.15x. What is the independent Variable? What is the dependent Variable? What is the domain? What is the range?

Answer 1

x≥0,

y≥20

Explanation:

Step one:

given data

We are told that the cost function is given as

`f(x) = 20+0.15x`

What is the independent Variable?

The independent variable is first term 20---- the number of minutes

What is the dependent Variable?

The dependent variable is the monthly cost f(x)

What is the domain?

The domain is

x≥0

What is the domain? What is the range?

y≥20