What is the IQR (Interquartile Range) for the following data? 20, 27, 28, 29, 30, 31, 33, 33, 37, 39,55 *

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

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

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left