A sample of 250 students applied colleges and 58 of them applied to local colleges. Find 95% confidence interval of true proportion of students who applied to local colleges

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