What's the vertex and how did you get it?

In which figure is de bc ? a. figure 1 b. figure 2 c. figure 3 d. figure 4

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

Write as a product: ac^2–ad+c^3–cd–bc^2+bd