Final answer:
In Gary's function, 5.25 represents the cost per memory stick.
Step-by-step explanation:
In Gary's function, the number 5.25 represents the cost per memory stick. The function f(n) = 5.25n + 20 is used to calculate the amount of money available to spend at Computers Now based on the number of 16-gigabyte memory sticks, n, that Gary plans to purchase. The 5.25 is the cost for each 16-gigabyte memory stick.