Question

Please help me

Answer 1

Question 2

Answer 2

@Michele_Laino

Answer 3

hint:
domain of a function is given by the set of all value of the independent variable. In your exercise, the independent variable is represented by the number of days

Answer 4

values*

Answer 5

sorry, I have to study question #2

Answer 6

100 every week would be $100. $400 in 4 weeks $500 in 5 weeks $600 in 6 weeks. The last day her balance was $400 was Day 8. Wait I don't get it

Answer 7

hint:
from the text of the exercise, the maximum balance holds from day #4 to day #8
now days #5, #6 and #7 are inside such interval, so, what can you conclude?

Answer 8

i don't know. I don't get it starts with $400 and end with $400

Answer 9

so we can write this: \(B(5)=B(6)=B(7)=400\), am I right?

Answer 10

I guess if see ends with $400

Answer 11

I get it now

Answer 12

ok! Now, we can see that the balance at day zero (starting day) is \($200\)

Answer 13

I see