How much wire is needed to build a rectangular pen 42.6 ft. long and 28.5 ft. wide

Eileen purchased 3.4 pounds of apples at the total cost of $19.72. if she purchases 6.2 pounds of apples at this store, how much would it cost?

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

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