Leslie Sporting Goods is a locally owned store that specializes in printing team jerseys. The majority of its business comes from orders for various local teams and organizations. While Leslies prints everything from bowling team jerseys to fraternity/sorority apparel to special event shirts, summer league baseball and softball team jerseys are the companys biggest source of revenue. A portion of Leslies operating information for the companys last year follows:

Month	Number of Jerseys Printed	Operating Cost
January	170	$5,790
February	190	5,825
March	545	8,660
April	725	9,760
May	645	9,260
June	425	6,210
July	335	6,145
August	260	5,925
September	125	4,810
October	315	6,010
November	260	5,970
December	150	4,950

Required: 3. Using the high-low method, calculate the stores total fixed operating costs and variable operating cost per jersey. (Do not round your intermediate calculations. Round your "Variable Cost" answer to 2 decimal places and "Fixed Cost" answer to the nearest whole number.)

4. Using the high-low method results, calculate the stores expected operating cost if it printed 480 jerseys. (Do not round your intermediate calculations. Round your answer to the nearest whole number.) 5. Perform a least-squares regression analysis on Leslies data. (Use Microsoft Excel or a statistical package to find the coefficients using least-squares regression. Round your answers to 2 decimal places.) 6. Using the regression output, create a linear equation (y = a + bx) for estimating Leslies operating costs. (Round your answers to 2 decimal places.) 7. Using the least-squares regression results, calculate the stores expected operating cost if it prints 620 jerseys. (Round your intermediate calculations to 2 decimal places. Round your final answer to 2 decimal places.)