The sin of 90 = 1 but how you get that with out a calculator I have no idea. Do you have to show your work?
Answer:
ok
Step-by-step explanation:
Answer:

Step-by-step explanation:
The number of people who receive the email after t weeks can be modeled by the following equation.

In which P(0) is the initial number of poeple who received the email and r is the factor.
Karim sent a chain email to 10 of his friends.
This means that 
The number of people who got the email increases by a factor of 1.4 every week.
This means that 
So

Which expression gives the number of people who got the email after 6 weeks?

Answer:
This is a function
Step-by-step explanation:
If we can draw a vertical line through the graph and make contact with the graphed line at only one point then it is a function.
Answer:
320
Step-by-step explanation:
160,000/2,500=64(5)=320
or
5/2,500=x/1600,000=320