Answer:

Step-by-step explanation:
we know that
The equation of a exponential growth function is given by

where
P(t) is the population in Madison
t is the number of years
a is the initial value
b is the factor of growth
we have

substitute

The answer is C: Lincoln uses 25 cents worth of supplies per cup.
Step-by-step explanation:
815..............…......…
Multiply the number amount of cartridges by the number of books and add that tot he number of cartridges by the number of magazines.:
This needs to be either less than or equal tot he total cartridges she wants to use
40B + 30M ≤ 300
Do the same with pages:
200B + 80M ≤ 1200
So first sivid 42 by 3 to get 14. Then multiply 14 by 4 to get 56. So the answer is C