Books ordered online cost eight dollars each +5 dollars for shipping which expression used to find the cost of the books (2-1)

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

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?

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15