I need help with this

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

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

24.8 bacteria per minute

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )