A cell phone company charges a monthly fee plus $0.10 for each text message. The monthly fee is $35.00 and you owe $80.90. How many text messages did you have?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Bring the fraction a/a-4 to a denominator of 16-a^2

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?