Speedy Inc is a shipping service and has observed the following delivery costs over the past few months:

Month Mileage in km Delivery costs 1 7250 $ 26,143 2 8160 $ 27,626 3 4250 $21253 4 3260 $19,639 5 7530 $26599 6 2540 $ 18,465 7 12760 $ 35,124 8 15670 $ 39,867 9 38520 $ 77,113 10 98520 $174,913 Leverage Excel to prepare a Scattergraph, in good form, and analyze whether the mileage is a key driver of the costs? What is the suggested Excel cost formula for this cost?