Answer:

Step-by-step explanation:



Answer:
1/49
Step-by-step explanation:
7^-2
1/49
7^2 is usually 49 for negative exponents just flip it
Answer:
We can call last years amount as 100 percent. that means 68-100. We want to know was 85 is so we can say 85-x. We have 68-100
85-x
Cross multiplying and solving for x we get 8500/68 =x x=125, so the answer is 125.
Answer:
Step-by-step explanation:
(When c=the amount of caffeine and p=the amount of pepsi)
c = 3p
The unit rate is 3 mg of caffeine per oz of pepsi
It would be replaced with f(-2) which is the reciperacle of 2x