What is the equation for a circle whose diameter has endpoints (-5,2) and (10,10)?

Is a positive integer raised to a negative power always positive

Don't know how to find x given these segment lengths

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.