This is a bit of a guess, but I think probably a) +4 and also a) -215
Answer:7
Step-by-step explanation:it’s 7
things were not as complicated when I was in middle school.
The mathematical statement 4 C A means that 4 is a subset of A. The "C" symbol is generally used in mathematical statements to mean that the former is a subset of the following statement.
15,99*5=79.95
The answer is 79,95 $