Write an equation to represent 'twice a number (x) is fifty"​

Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

What is coefficient of the term of degree of degree 5 in the polynomial below