Which of the following is not a direct proportion?
A. y=3x
B. y=45x
C. y=72x
D. y=2

What is 32+4 x (16 x 1/2) -2 show your work}

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

[15 points]find the quotient with the restrictions. (x^2 - 2x - 3) (x^2 + 4x + 3) ÷ (x^2 + 2x - 8) (x^2 + 6x + 8)