The endpoints of the diameter of a circle are (-7, 3) and (5, 1). What is the center of the circle?
(-6, 2)
(-1, 2)
(-2, 4)

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?