Mitchell solved a quadratic equation. His work is shown below.

In which step did Mitchell make an error?
5(x−2)² +6=86

5(x−2)²=80 Step 1

(x−2)²=16 Step 2

x²-2²=16 Step 3

x²=20 Step 4

x=±√20 Step 5

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

Tiffany drives 285,120 feet before lunch and 628,320 feet after lunch. about how many kilometers does she drive all together

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?