If a customer uses 80 MB, the monthly cost will be $19.00. If the customer uses MB, the monthly cost will be $. Find a linear equation for the monthly cost of the data plan, C , as a function of x , the number of MB used. math problem

Step-by-step explanation:

The linear equation has the following form:

Where:

- Number of MBs of the data plan.

- Monthly cost of the data plan.

The slope of the function is:

The equation is:

Full Question

If a customer uses 80 MB, the monthly cost will be $19.00. If the customer uses n MB, the monthly cost will be $C Find a linear equation for the monthly cost of the data plan, C , as a function of x , the number of MB used.

The linear equation for the monthly cost of the data plan, C , as a function of x , the number of MB used is; C = 4.2105 n

Step-by-step explanation:

Given;

Usage = n = 80MB

Cost = ∆C = $19

Let C = monthly cost

Let x = MB per minute

The relationship between C and n is

C = ∆C * n / ∆n

C = 80/19 *n

C = 4.2105 n

The linear equation for the monthly cost of the data plan, C , as a function of x , the number of MB used is; C = 4.2105 n

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.