Mateo begins his dive at sea level. He dives down 15 meters, and then rises up 4 meters. He dives again, going down 7 meters. Which equation models Mateo’s movements, and uses the commutative property? A.(–15) + 4 + (–7) = (–7) + (–15) + (–4) B.(–15) + 4 + (–7) = 7 + 15 + (–4) C.(–15) + 4 + (–7) = 4 + (–15) + (–7) D.(–15) + 4 + (–7) = 4 + 15 + 7

3x^3-x^2+6x-9

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices

it would be 6xy and -16xy.