Question

The college student who is looking for a data plan for her cell phone found a third option,

which also offers a 2 gigabyte monthly allowance for data.
The monthly cost of this option can be represented by function C, defined by:
30x + 3 where x is the gigabytes of data used over the monthly allowance.
1. Find C (0.7) and explain what it means in this situation.

Answer 1

Value of C(0.7) = 24 means that the cost of 0.7 gigabytes of data is $24

Explanation:

We are told the monthly cost of the 2 gigabyte monthly allowance for data is;

C(x) = 30x + 3

where x is the gigabytes of data used over the monthly allowance

Now, we want to find C(0.7)

C(0.7) = 30(0.7) + 3

C(0.7) = 21 + 3

C(0.7) = 24

This value of C(0.7) = 24 means that the cost of 0.7 gigabytes is $24