Aman buys s t-shirt at $p each and sells them at $q each. find his profit in terms of s , p and q.

Which one ? is the answer and how to find this answer

Find the area of the regular hexagon if a side is 20 cm.

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?