Question

Write an exponential function for the value, y, after x years

Answer 1

Step-by-step explanation:

Step 1:  Set x equal to 0 to find the y-int

$y = 10000(1 - 0.40)$ → Not an exponential equation

$y=10000(1-0.40)^0$ → 10,000 → Works for first test

$y = 10000(1-0.60)^0$ → 10,000 → Works for first test

$y = 10000(1+0.40)^0$ → 10,000 → Works for first test

Step 2:  Set x equal to 1

$y=10000(1-0.40)^1$ → 6,000 → Works for second test

$y = 10000(1-0.60)^1$ → 4,000 → Does not work for the second test

$y = 10000(1+0.40)^1$ → 14,000 → Does not work for the second test

Answer:  The answer is Option B