Hey there! :)
Answer:

Step-by-step explanation:
Normally, in the parent function y = cos x, when X = π, Y = -1. However, in this graph, when X = 0π, Y = -1.
Therefore, there has been a horizontal shift of π to the left. The new equation would be:

10 out of 10 equals 1.
then there is 9 left.
This gives 1 and 9 over 10.
9 over ten is not a whole number as 10 over ten is.
Hope this helps.
Answer:
only x=1
Step-by-step explanation:
Ok line y because you have to plot two right
Answer:
Prediction model for Jewelry sales 7.15 billion = 2 billion {1+r%}¹⁰
Jewelry sales in 2015 = 8.343 billion dollars
Step-by-step explanation:
The compound interest expression is used to describe the increase in Jewelry sales
A = P{1+r%}ⁿ = 7.15billion = 2billion {1+r%}¹⁰
Where A= Jewelry sales in 2013
P Jewelry sales in 2010
r= annual rate increase
n= number of years
r is then calculated from 7.15billion = 2billion {1+r%}¹⁰
Therefore 3.575billion = {1+r%}¹⁰
¹⁰√3.575 × 10⁹ = 1+r%
9.022514830966 = 1+r%
r% = 8.022514830966%
Jewelry sales by 2015 = A = P{1+r%}ⁿ where n= 2
A = 7.15×10⁹{1+8.022514830966/100}² = 8.34370097596 × 10⁹
Therefore Jewelry sales in 2015 = 8.343 billion dollars