Answer:
1. y = 10(1/3)^x
2. 24.8 bacteria per minute
Step-by-step explanation:
1.
When you raise a number between 0 and 1 to a positive exponent, the result is less than 1, so it indicates exponential decay.
The only such function in the choices is
Answer: y = 10(1/3)^x
2.
b(t) = 4(2)^t
b(0) = 4(2)^0 = 4
b(5) = 4(2)^5 = 128
average rate of change = (128 - 4)/(5 - 0) = 124/5 = 24.8
Answer: 24.8 bacteria per minute
