Brad built a rectangular brick wall in the back yard. the wall is 20 feet long and 6 feet high. the wall cost $9 dollars per square foot. how much did it cost brad to build a wall

Aband wants to create a cd of their last concert. to creat the cds, the cost will be $350 advertisement fee plus $3 per cd.write an inequality that represents how many cds they can buy with a maximum of $1225.solve the inequality