Answer:
I and III
Step-by-step explanation:
On a unit circle, the only two angles whose sine is 
are 
and 
, otherwise known as 
. Therefore, the correct answers are I and III. You can see the unit circle below, where the y coordinates of the above angles show .
Answer:
D
Step-by-step explanation:
Because it is x - 7, we know it has a phase shift of + 7 to the right.
We also know that since +1 is in the equation, there is a vertical shift of + 1.
Hope this helps
The decay factor here is 0.85, and it means the car’s value changes by 85% every year, or goes down by 15% every year.
The formula for exponential decay is y = a(1 - b)^x
y is the final amount.
a is the initial amount, which is $30,000 in this case.
(1 - b) is the decay factor, or the number the original value gets multiplied by each year, which is 0.85 here.
b is the percent decrease in decimal form. In this case, we can find it using the formula (1 - b) = 0.85. We soon find that b = 0.15, or 15%.
x is the number of years.
The awnser is 16 because 16/2 is 8 and 8 is your awnser because, 16 cut in half is 8.
