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

All you do is divide.
330/390= 0.846
round it: 0.85
Answer is about 85%
He can make 12 or 9 because 9x4=36 and 12x3=36
0.45 = 45/100
45/100 = 9/20 (Simplified)
Answer:
20+2y
Step-by-step explanation:
20 pounds more would be an addition of 20 and twice would have to be represented by 2y because it is double John's weight y.