Answer from cs61c-ei (Jing Chen 16669246) for Question 1
Memory location 53 = 0x35 = 0011 0101 (base 2)

Because each block has 8 words (2^3), three bits are used to specify the byte offset. Address 53 maps to the cache word 53%8 = 5.  The tag field holds the data of Memory[110101] (holds data at the given memory location).