A phone company has a monthly plan where a customer pays flat monthly fee of $20 and then a certain amount of money per gigabyte if data used on the phone. If a customer uses 3 GB, the monthly cost will be $32. If the customer uses 7 GB, the monthly cost will be $48. a. Find a linear equation for the monthly cost of the data plan as a function of x,the number of GB used. C(x)= and it is b. The y-intercept is. and it is c. Use your equation to find the total monthly cost if 10 GB is used
Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
A phone company has a monthly plan where a customer pays flat monthly fee of $20 and then a certain amount of money per gigabyte if data used on the phone. If a customer uses 3 GB, the monthly cost will be $32. If the customer uses 7 GB, the monthly cost will be $48.
a. Find a linear equation for the monthly cost of the data plan as a function of x,the number of GB used.
C(x)= and it is
b. The y-intercept is. and it is
c. Use your equation to find the total monthly cost if 10 GB is used
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