Question

Need to keep cell bill under 60.,monthly charge is 30. And texts are 0.05 each. Write an inequality to represent the # of texts she can have

Answer 1

`30 + 0.05x < 60`

The number of texts she can have is less than 600.

Explanation:

Total monthly charge

30 + 0.05 for each text.

So, for x tests, the charge is:

`C(x) = 30 + 0.05x`

Write an inequality to represent the # of texts she can have?

It has to be under 60, so:

`C(x) < 60`

`30 + 0.05x < 60`

The solution is:

`0.05x < 30`

`x < (30)/(0.05)`

`x < 600`

The number of texts she can have is less than 600.