Ricki has a prepaid cellphone. last week ricki made 4 calls and sent 20 text messages which cost him $4. this week he made 10 calls and sent 5 text messages which cost him $5.50. how much does one call cost? how much does one text cost?

Anne plans to increase the prices of all the items in her store by 5%. to the nearest cent, how much will an artist save if the artist buys a canvas and a frame that each measure 24 by 36 inches before the price increase goes into effect?