The answer I got is = .0688888889
We can easily enumerate E and F:
The intersection 
is a set composed by all the element belonging to both E and F, i.e. 4.
The intersection of this set with D works in the same way, but it's actually a trivial one, since is a subset of D. In fact, D is the set of all integers, while 4 is a particular integer. And in general, if A is a subset of B, then the intersection between A and B is A itself, so the final answer is
Answer: 12x+18y ≤ 60
Step-by-step explanation:
Hi, to answer this question we have to write an inequality with the information given:
The product of the time that takes to do an oil change (12) and the number of oil changes(x); plus The product of the time that takes to do a tire change (18) and the number of tire changes; must be less or equal to 60 minutes (time available).
12x+18y ≤ 60
Feel free to ask for more if needed or if you did not understand something.
Answer:
b-3.5
Step-by-step explanation:
