Answer:
Step-by-step explanation:
Answer: 2.456 x 10^11
Step-by-step explanation:
You move the decimal to the left until there’s no more zeroes
Answer:
4n +28
Step-by-step explanation:
Tommy's purchases add up to ...
4n +10 + 18 = 4n +28
You would subtract 3x from the left side, and get -2 = -2x, so x=1 would be your answer