I need help on question a and b. please help me asap?!?!?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Which of the following equations is equivalent to x/3-6/x=1