Neil took his family of five out to dinner at hogtastic pit bbq. they all ordered the buffet and drink at $12.80 each. neil left a 15% gratuity for the waitress on the after-tax bill. based on a tax rate of 7.5%, neil ended up paying a total of $
for dinner.

$79.12

Step-by-step explanation:

Neil took his family of five out to dinner at HogTastic Pit BBQ.

They all ordered the buffet and drink at $12.80 each = 12.80 × 5

                                                                                       = $64.00

Tax rate on the bill = 7.5%

Bill amount with tax = 64 + (7.5% × 64)

                                = 64 + ( 0.075 × 64)

                                = 64 + 4.80

                                = $68.80

Neil left a 15% gratuity for the waitress on the after-tax bill

= 68.80 + (15% × 68.80)

= 68.80 + (0.15 × 68.80)

= 68.80 + 10.32

= $79.12

Neil ended up paying a total of $79.12 for dinner.