Myra and her scout troop are heading to the Zoomzilla zip-line course. They plan to purchase the group package, which will be $572 for 13 people. That's $4 less per person than the
normal cost for an individual. How much is the normal cost for an individual?

i think this could be a possible answer (1 / 84) -1

good luck! : d

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart