For #'s 11 - 13, match the real-life problem with the correct equation.
A) x + 15 = 7
B) 15 - x = 7
C) 15 + 7 = x
11) You own 15 DVDs. You buy 7 more. How many DVDs do you own now?
12) There are 15 members of a high school band brass section. After graduation there are only 7
members. How many members graduated?
13) The temperature rose 15 degrees to 7°F. What was the original temperature?