Which pairs of ratios form a proportion? choose all that apply.

a. 1/6, 4/20
b. 7/9, 28/36
c. 14/18, 21/27
d. 30/80, 6/18

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

Answer for 10 points show work you guys in advanced < 3

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?