Which expression represents the product of z and 7? a. z+7 b. z-7 c. z•7 d. z divided by 7

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.