4. What is y = (3x – 9)(x + 2) in standard
form?
A y = 3x² - 4x - 18
B y = 3x - 3x - 18
Cy= 3x2 - 6x + 6

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.

What is the base of 1/9 to the power of 2

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500