Determine the following estimate without using a calculator. Then use a calculator to perform the computation necessary to obtain an exact answer How reasonable is your estimate when compared to the actual answer? Estimate the total cost of six grocery items if their prices are $13.26, $9.48, $3.13, $13.91, $13.68, and $7 85, by rounding each price to the nearest dollar and then adding The estimate of the total cost of the grocery items is S (Type a whole number.)