Find the value of x and yz if y is between x and z

XY=2x + 1, YZ = 6x, and XZ = 81

How do you use the elimination method for this question? explain, because i really want to understand!

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2