1. At the school bookstore, a pencil costs 25c, a notebook costs $1.75, and a piece of graph paper costs 5c.
Which formula below could be used to determine the total cost c, in cents, of purchasing p pencils, n
notebooks, and g pieces of graph paper?
A. c = 25p + 1.75n +5g
B. c = 25p + 175n +59
C. c = 0.25p + 1.75n + 0.05g
D. c = 0.25p + 1.75n + 0.5g