Please answer question correctly and explain how you got the answer discriptively

9. Given two strings "first string" and "second string". 9.1. How much storage should be declared for each of the strings? 9.2. What would the function strlen("today is Wednesday"); return? 10. Given a byte in 2's complement representation 10.1. What is 0x56 in decimal? 10.2. -13 10.3. -110 10.4. 38