HELP PLEASE. write 7∑k=2 (3k+2) in expanded form and find the sum.

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

How do you write something in scientific notation?

Einstein office equipment has a rental plan for office machines. a fax machine that lists for $722.98 can be rented for 22% of the price annually. the state imposes a usage charge of 3.2%. if stephen hawking travel decides to rent the fax machine, what will its total monthly rental charge be?