What is the solution to the equation? 13 3/4 + x = 7 1/4

A. x = 6 1/4
B. x = -6 1/2
C. x = 20
D. x = 21

Which term best describes the association between variables a and b

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Hi, can anyone show me how to do this problem? 100 points for this. in advance