winston and his friends are heading to the yeti trails snow park. they plan to purchase the yeti group package, which costs $54 for 6 people. that's $3 less per person than the normal cost for an individual. which equation can you use to find the normal cost, x, for an individual? a) 6(x-3)= 54 b) 3(x-6)=54 c) 3x-6=54 d) 6x-3=54