Lan pays a semiannual premium of $450 for automobile insurance, a monthly premium of $125 for health insurance, and a an annual premium of $500 for life insurance. The monthly expense is $?

understand that i don't know the answers

will someone answer his question

what is the question?

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

c

step-by-step explanation: