Answer:
A = $8406.6
Step-by-step explanation:
Given:
Average rate 
Initial cost of painting 
Time 
We need to find the final amount of painting at the end of a 20-year.
Solution:
Using Exponential Growth rate formula as:
----------(1)
Where:
A = Final amount
a = Initial amount.
r = Rate as a decimal.
t = Time.
Now, we substitute all given values in equation 1.


Substitute
in above equation.

A = $8406.62
Therefore, value of the painting at the end of a 20-year A = $8406.6
This is impossible to answer because your question is incomplete.
just divide it which the answer is 1/4
I got 45 for x and 135 for z.
X and 3x are supplementary (they equal 180) x+3x=180 — 45+3(45)=180
Then x and z are also supplementary x+z=180 — 45+z=180
(45-45)+z=180-45
Z=135
Sorry if this is wrong. I did my best, hope it helps