Twelve questions on exponential models: writing one from a percent, reading the factor back out, telling a doubling list from a list that adds, and the…
12 questions • Zestly
• A botanist counts 500 plants of a rare species in a reserve, and the number grows by 12 percent each year. Which expression gives the…
• A company asset worth 8000 dollars depreciates by 15 percent each year. Which expression represents the value after $t$ years?
• A savings account starts with 2000 dollars and earns 4 percent interest compounded annually. Which expression represents the balance after…
• A chemical concentration is given by $C = 400(0.90)^t$ milligrams per liter. What is the starting concentration at $t=0$?
• A luthier's antique violin is valued by the model $V = 5000(1.08)^t$ dollars, where $t$ is the number of years since it was appraised. What…
• At zero, one, two, and three hours, the number of bacteria is 100, 200, 400, and 800. What kind of change is this?
• At zero, one, two, and three hours, the number of items is 50, 75, 100, and 125. What kind of change is this?
• A model $P = 500(0.75)^t$ represents a quantity. What does the 0.75 indicate?
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