Please help!

Sandy sells authentic Amish quilts on her websile. Suppose Sandy expects to sell 1,200 quilts during the coming year. Her average sales price per quilt is $275, and her average cost per quilt is $175. Her fixed expenses total $60,000. Compute Sandy's operating leverage factor at an expected sales bevel of 1,200 quilts. If sales volume increases 10%, by what percentage wil her operating income change? Prove your answer by calculating operabing income at a sales wolume of 1,200 and at a sales volume of 1,320. Compute her operating leverage factor. (Round your answer to two decimal places.) First, identify the formula, then compute the operating leverage factor