Answer:

Step-by-step explanation:
The product of two numbers is always rational.
The percent increase is 12.5%, 800 multiplied by 0.125 equals 100 and 100+800=900.
4+5 would be 9 because you add 4 and 5
We plug in 14 for x when we set the two equations equal to each other to prove they are equal.
So true LM congruent to MN
33.3 because 27/50=36/x and x=66.67 and thats how much as decayed after 36 hours but you want what is left so subtract from 100 and get 33.3