What values of y satisfy this equation?

3y - 14 = 16

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

What is the number 321,000,000 in scientific notation? also what is the number? ?

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?