word problem; slope y-intercept
A cell phone plan costs $25 per month, plus $5 for every gigabyte of data usage.
a. Describe the cost vs data usage relation with a linear equation where y is the monthly cost and x is the number of gigabytes of data accessed during the month.
b. Plot the graph of this function for 0≤x≤7
c. Explain what the slope and y-intercept mean for this function.