F(5)= 1.5x + 7

This is a function

Yes that is a function

Step-by-step explanation:

This is a function

Step-by-step explanation:

A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.

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.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.