This is just solving percentages which is fairly easy! :)
To solve an equation like this, make all the percentages into decimals:
-.30
-.25
Now, take 750$ and multiply it by .30 = 225$
Do the same with .25 % = <span>187.50
Now add the two variables together, and subtract from 750 $
The author will take home = </span><span>337.5</span>
Answer:
1) 62.5
2) 50
3) 75
4) 100
Step-by-step explanation:
1)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After 
days, there will be 
of it left.
So, 
.
2)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After 
days, there will be 
of it left.
So, 
3)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After 
days, there will be 
of it left.
So, 
.
4)
The only answer left is 
grams. You can solve it the same way you solved the previous steps.
Answer:
cheese
Step-by-step explanation:
Answer 1/5, 0.2 repeating, and 25%
