Answer:
7
Step-by-step explanation:
2-3 = -1 and 7 - 1 is 6
x+y=7
It looks like the ∩ sign may be missing from the question. If you mean to find A∩C, called the intersection, you're looking for elements that are both in A and C.
{0, 2} qualifies.
D all of the above because it fits all those descriptions
If 1 cubic feet=100 pounds then, 240 cubic feet=x pounds
1=100
240=x
cross multiply; x=24000 so x=24000
It would be written like this, X+7< 53, because the sum of that number cannot be more than 53, you would put a less than sign to represent that, and in case the sum can be 53 as well then it would be: X+7

53