plzzz i need it !

1. use the graph to write an explicit function to represent the data and determine how much money taryn earned in week 5.

graph with x axis labeled number of weeks and ranges from zero to seven, y axis labeled money earned, in dollars, and ranges from zero to one hundred eighty with points at one comma four, two comma twelve, three comma thirty six, and four comma one hundred eight

f(n) = (3)n − 1; f(5) = 81

f(n) = 4(3)n + 1; f(5) = 2,916

f(n) = 4(3)n; f(5) = 972

f(n) = 4(3)n − 1; f(5) = 324

2. the annual growth of noah's worm collection is represented by the table. what does f(x) = 4 represent?

x 0 2 4
f(x) 4 16 64

the number of new worms each year
the number of worms noah started with
the common ratio of worm growth
the average rate of change of worm growth each year

3.
in the month of september, a bird population increased by a factor of 1.25 every day for those 30 days. the function below shows the number of birds, f(x), after x days:

f(x) = 250(1.25)x

which of the following is a reasonable domain for the function?
0 ≤ x ≤ 250
0 ≤ x ≤ 30
all positive integers greater than 100
all real numbers