Hard Sat Questions Math ~repack~ Access

You don't need to calculate it. You just need to know that it measures "spread." The more spread out the data points are from the mean, the higher the standard deviation.

This tests your ability to apply SOHCAHTOA and scale a triangle. $\sin(A) = \frac\textOpposite\textHypotenuse$. Here, the opposite side to angle $A$ is $BC$, and the hypotenuse is $AB$.

The function (f(x) = ax^3 + bx^2 + cx + d) has a point of inflection at (x = 2) and a relative maximum at (x = -1). If (f(0) = 5), what is (f(4))?

Rewrite in standard form: (3x^2 + 12x - k = 0). Here, (a = 3), (b = 12), (c = -k).