Which expression represents each mathematical phrase? Drag the answer into the box to match each phrase.

subtract 9 from z
add 9 and z
divide 9 by z
multiply 9 by z

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

The distribution of a sample of the outside diameters of pvc pipes approximates a symmetrical, bell-shaped distribution. the arithmetic mean is 14.0 inches, and the standard deviation is 0.1 inches. about 68% of the outside diameters lie between what two amounts?