Lala how can you use a formula to find the perimeter of a polygon that has sides of equal length

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.