a phone company has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. if a customer uses 450 minutes, the monthly cost will be $87.50. if the customer uses 820 minutes, the monthly cost will be $143. a) find a linear equation for y, the monthly cost in dollars, of the cell plan as a function of x, the number of monthly minutes used y= b)interpret the slope and y-intercept of the equation. the y-intercept isthe $________ flat monthly fee, and the slope is the $________ fee for each additional minute used. c) use your equation to find the total monthly cost if 723 minutes are used $____________
a phone company has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. if a customer uses 450 minutes, the monthly cost will be $87.50. if the customer uses 820 minutes, the monthly cost will be $143.
a) find a linear equation for y, the monthly cost in dollars, of the cell plan as a function of x, the number of monthly minutes used
y=
b)interpret the slope and y-intercept of the equation.
the y-intercept isthe $________ flat monthly fee, and the slope is the $________ fee for each additional minute used.
c) use your equation to find the total monthly cost if 723 minutes are used $____________
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