javier is shopping for school supplies . he is buying 3 of the same notebooks and 2 pens that cost $1.75 each. His total, before tax, is $12.47. which equation below could be used to determine the cost of each notebook.

A. 3(1.75)+2x=12.47

B.3x+2(1.75)=12.47

C. 3(12.47)+2(1.75)+x

D. 3(1.75)+2(12.47)=x

PLEASE HELP