This is a long division problem
7434.44/98.6= 75.4
Hope this helps
Please double check my work
AB = -2x
BC = 4x
Simple Interest , I = PRT/100
Where P = Principal, R = Rate, T = Time in years
Time, T = (100*I)/(P*R)
T = 100* 84 / (600 * 7) Use your calculator
T = 2
Time is 2 years.