please i want a full explanation of the whole figure and concept what occurs in the branches and each instructions ?

also please i want to know the rules to solve these questions and there solution , the way and how i can solve them and explanation ?

Branch Instructinn Q3: Assume multiple cycle MIPS: Assume that x and y are arrays of words and the base address of x is in R1 and the base address of y is in R2. If ALU instructions (add and addi) take 1 cycle to execute, load/store (Iw and sw) take 5 cycles to execute, and the branch (bne) instruction takes 3 cycles to execute; 3. How many instructions are executed during the running of the following code? b. How many cycles are needed to execute the code (all iterations)? c. Calculate the average CPI (cycles per instruction)? d. Calculate the Branch Target Address (loop) when branch is taken? e. Identify the Read after Write (RAW) hazards that exist among the Loop instructions (only)? Q4: In a Six Stages Pipeline machine; consider the following program fragment