Six grocery items have the following prices: $5.82, $10.28, $8.51, $12.13, $6.64, and $11.77. (a) Estimate the total cost of the six items by rounding each price to the nearest dollar, then adding. (b) If you have $60, and decide not to buy the last item, approximately how much change will you receive? (a) The total cost of the grocery items is approximately $ (Type a whole number.)