cumulative frequency polygon of the lengths in metres of 20 fish that are caught by two fishermen. the interquartile range of the lengths of the fish is​

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50