Please answer questions 42 43 and 44

42. The sales tax on an item is 6%. Express the total cost, C, in terms of the price of the item, P. 43. A price increases 5% due to inflation and is then reduced 10% for a sale. Express the final price as a function of the original price, P. 44. Write a formula for the area of a circle as a function of its radius and determine the percent increase in the area if the radius is increased by 10%. plicants at a certain company and