The function h is defined below. H(x)=x+7/x^2-81
Find all values of x that are NOT in the domain of h.
If there is more than one value, separate them with commas

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Me d is also an option but i couldn't get it in the picture