Could the given matrix be the transition matrix of a regular Markov chain? [Start 2/2 Matrix 1st Row 1st Column 0.3 2nd Column 0.7 2nd Row 1st Column 0 2nd Column 1 EndMatrix ]

Can someone show me the steps to solve the problem?

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

Julian wrote the following numeric pattern on the board3,10,17,24,31,38.what numbers of julian's pattern are compound numbers.