please answer 2,3,4,5

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Sophia operates a full service day spa in a small college town. Recentiy, Sophia rented space next to her spa and opened a spray tanning salon. She anticipated that the costs for the spray tanning service would primarlly be fixed, but found that tanning salon costs increased with the number of appointments. Costs for this service over the past 8 months are as follows: Required: 1. Which month represents the high point? The low point? High point Low point 2. Using the high-low method, compute the variable rate for tanning. Next, compute the fixed cost per month. Round the variable rate per tanning appointment to the nearest cent and use it in your further calculations. Round the fixed cost per month to the nearest dollar and use it in your further calculations. Variable rate for tanning s X per tanning appointment Fixed cost per month s 3. Using the variable rate and fixed cost, what is the cost formula for tanning services? Total tanning service cost =$1390+($0.45 Number of appointments ) 4. Calculate the total predicted cost of tanning services for September for 2,500 appointments using the formula found in Requirement 3 . of that total cost, how much is the total fixed cost for September? How much is the total predicted variable cost for September? If required, round the final answers to the nearest dollar. 5. Calculate the total predicted cost of tanning services for September for 3,980 appointments. If required, round the final answers to the nearest dollar. \$