Which of the following is a solution of x^2 + 2x + 8? a. 4 + i√7 b. −1 + i√7 c. 2 + i√7 d. −4 + i√7

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.

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x