Question

Which table shows exponential decay?

Answer 1

9514 1404 393

Answer:

  A

Step-by-step explanation:

When the decay is exponential, the remaining amount is the same fraction for every interval. When the decay is linear, the change in amount is the same for every interval.

In Table A, the fraction remaining is 8/16 = 4/8 = 2/4 = 1/2. Table A shows exponential decay.

In Table B, the amount of change is 12-16 = 8-12 = 4-8 = -4. Table B shows linear change.