Answer:
Step-by-step explanation:
The sum of
7.8 and 7.02 would be
14.82
because
7.8
+7.02
------------
14.82
hope this helps :)
An implication 
is true if either the premise 
is false, or both the premise and conclusion 
are both true, and false otherwise.
Negation 
is straightforward; if a statement is true, then its negation is false, and vice versa.
A conjunction 
is true if both premises are true, and false otherwise.
Finally, by the rules of implication, we can fill the last column:
The explicit formula is B
