Ashley is taking out a loan in the amount of $12,000. Her choices for the loan are a 4-year loan at 7.00% annual simple interest and a 5-year loan at 8.00% annual simple interest. What is the difference in the amount of interest Ashley would have to pay for these two loans?
For the 4-year loan, Ashley would have to pay 12,000 * 0.07 = $<<12000*0.07=840>>840 in interest per year.
So, the total interest she would have to pay for the 4-year loan is 840 * 4 = $<<840*4=3360>>3360.
For the 5-year loan, Ashley would have to pay 12,000 * 0.08 = $<<12000*0.08=960>>960 in interest per year.
So, the total interest she would have to pay for the 5-year loan is 960 * 5 = $<<960*5=4800>>4800.
Therefore, the difference in the total interest Ashley would have to pay for these two loans is 4800 - 3360 = $<<4800-3360=1440>>1440. Answer: \boxed{1440}.