Need help with number 17

the difference between -3^4 and (-3)^4 is that, for -3 to the power 4, the power only affect 3 and not negative which you get the answer has -81 and for (-3)^4 the power affect everything in blacket which result to the answer as positive 81

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.