Solve by using the quadratic formula: Simplify

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

What is the frequency of the sinusoidal graph?

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.