Answer:

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

where
y is the average annual salary
x is the number of years
r is the rate of change
a is the initial value
In this problem we have

substitute


For x=4 years

If its from one test it doesnt always affect your grades but if you are continuously getting 28% then it will badly affect your grades
Rhiana because she had the least amount of time
Answer:
20
Step-by-step explanation:
Number of juniors = 80
Number of seniors = 100
To obtain the same and highest number of student on each float ; we find the highest common factor :
____80 ___100
_2__40___50
_2__20___25
_5__ 4____5
The highest common factor = (2 * 2 * 5) = 20