Easy Word Problem

A local pool charges a flat monthly fee plus a fee for each day the pool is used. The total cost in dollars, y, to use the pool for x days can be found by the equation: y = 2.65x + 5. What is the daily cost of using the pool and why?

A. $2.65 because it is the y-intercept

B. $5 because it is the y-intercept

C. $5 because it is the slope

D. $2.65 because it is the slope