First you have to convert the 9 months into years which is 9/12. Interest = (PRT)/100 = (1200×5×9/12) / 100 = $45
Answer:
b = (d-c)/a
Step-by-step explanation:
ab + c = d
We want to solve for b, so we need to get b alone
Subtract c from each side
ab+c-c = d-c
ab = (d-c)
Divide each side by a
ab/a = (d-c)/a
b = (d-c)/a
I'm not 100% but I got x=-3/2
