Help pls and thank you Which expressions are polynomials?
Select each correct answer.

6y2+5x

y2+3x134

7x2+84x

7y2+9x4

Adding and subtracting matricesfind the value of each variable. x = and y = would

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.