If ten is added to six times a number, the result is three more than the square of the number. Find all such numbers. If there is more than one answer, separate them with the "and" button.

If there is no such number, select the "None" button.

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.