Evaluate m – n when m = –2.6 and n = 7.9.
a. –10.5
b. –5.3
c. 5.3
d. 10.5

Write two subtraction equations that are equivalent to 5 + 12 = 17.

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor