Find the average rate of change of $g(x)=-5x^3+4$ from $x=-1$ to $x=2.$

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Sep. $17$: Paid Max Appliance Wholesale, less return and discount.

$\backslash$table$[[$Date$,,$Debit,Credit$],[$Sep$.17,$Accounts Payable,$5,600,],[,$Cash,,$],[,$Purchase Discounts,,$]]$