Y=2x+7 ordered corectly

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?

Nine more than four times a number is the same as one less than twice the number. find the number?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.