Plz help! ASAP
Find the measure of angle

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

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?