The answer is below.
## newMult.asm ## ## Program to calculate 5 × x - 74 ## ## Register Use: ## $8 x ## $9 result .text .globl main main: ori $8, $0, 12 # put x into $8 ori $9, $0, 5 # put 5 into $9 mult $9, $8 # lo <-- 5x mflo $9 # $9 = 5x addiu $9, $9,-74 # $9 = 5x - 74 ## End of file