A pizza costing $17.60 is cut into 16 equal pieces. Brad eats six pieces. In dollars, how much was the portion of the pizza that Brad ate? Express your answer as a decimal to the nearest hundredth.
First take $17.60 and divide it by the number of slices to get what each slice costs.
$17.60/16 = $1.10
Multiply the cost of one slice by the number of slices eaten
$1.10 x 6 = $6.60
Brad ate $6.60 of the pizza.