4.5(4-x) + 36 = 202 - 2.5(3x + 28)
Distributive property
18 - 4.5x + 36 = 202 - 7.5x - 70
Combine like terms
-4.5x + 54 = -7.5x + 132
Add 7.5x to both sides
3x = 78
Divide both sides by 3
x = 26
This is an example of an exponential decay problem.
The basic format of the equation is:

In this problem, the starting amount is 100. The rate is 0.5 because it is being cut in half every 330 days.
Hey there!
You can figure this out by making 40% into a decimal. This decimal would be .4. So multiply 35 by .4. You get 14. So 14 is 40 percent of 35.
I hope this helps!
Answer:
3 times 100 divided by 15 gives us 20%
Step-by-step explanation: