Mia is going to buy a book that is marked as 75% off the original price was $48

What is the value of the discount in dollars

What expression is equivalent to 42x-56y

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18