3a−28−7a=10a
what is a?

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.

Is the point (0, 8) on the x-axis or y-axis? how do you know?

What is the measure of one interior angle of a pentagon