Answer: $13.00
Step-by-step explanation: If the teacher spent $88 and bought 8 pizzas we first have to find how much they spent on each pizza. We do this by dividing the money by the number of pizzas so 88/8 which leaves us with $11 spent for each pizza. Since each pizza was on sale for $2 off its regular price it means that each pizza was originally $2 more than what the teacher payed for which means the regular price is 11+2 which means each pizza cost $13.