Find the difference
(3.8 x 104) - (2 x 103)

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42