Write 7x1+4 1/10+6 1/1000 in standard form

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

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?