Please provide detailed explanation

Problem 3: (9 pts, 3pts each sub-part) One fallacy students and researchers often make is expecting to improve the overall performance of a computer just by improving only one aspect of the computer. Consider a computer running a program that requires 250 s, with 70 s spent executing FP instructions, 85 s executed L/S instructions, and 40 s spent executing branch instructions. By how much is the total time reduced if the time for the FP operations is reduced by 20%? By how much is the time for INT operations reduced if the total time is reduced by 20%? Can the total time be reduced by 20% by reducing only the time for the branch instructions? b. c. Solution Problem 4: (5 pts) Translate the below C code into RISC-V architecture, assuming that the values of i and j are placed in registers x28 and x29 respectively. The base address of array B is in register x30, and the base address of array C is in register x31 Solution Problem 5: (6 pts) Let register x5 hold the hex number 00a47c40hex and 00447040 hex is stored in register x6. a) (2 pts) What are the contents of register x31 after the following instruction is executed? addi x31, x5.,8 b) (2 pts) What would be the contents of register x30 after the following instruction is executed? add x30, x5, x6 c) (2 pts) What would be the contents of register x29 after the following instruction is executed? or x29, x5, x6