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Answer:
- y = 100,000(1 + 0.15)^t
- y = 1200(1 -0.06)^t
- y = 49.50(1 -0.07)^t
- y = 135(1 +0.05)^t
- value of $200 decreases (decays) by 25% each year
Step-by-step explanation:
It should be no stretch to understand that "increases" means the function is a growth function (+ sign), and "decreases" means the function is a decay function (- sign).
The multiplier in front (a) is the initial value — the value when t=0.
