Very easy need by morning answer please

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd

Ms. aniston asked seven students in her class to collect pet food cans for a local animal shelter. the dot plot shows the number of food cans collected by each student. each dot represents one student. what is the median of the data set? a. 6 b. 9 c. 7 d. 8

What is the expression equivalent to (3x^2-7)