Struggling with this problem. Thank you in advance.

An aerodynamic three-wheeled automobile (the Dart) runs on compressed natural gas stored in two cylinders in the rear of the vehicle. The $15,000 Dart can cruise at speeds up to 85 miles per hour, and it can travel 100 miles per gallon of fuel. Another two-seater automobile costs $10,000 and averages 50 miles per gallon of compressed natural gas. If fuel costs $7.25 per gallon and MARR is 12% per year, over what range of annual miles driven is the Dart more economical? Assume a useful life of seven years for both cars. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 12% per year, Dart is more economical if you are planning on driving miles or more per year. (Round to the nearest whole number) Discrete Compounding; i = 12% Single Payment Uniform Series Compound Compound Sinking Amount Present Amount Present Fund Factor Worth Factor Factor Worth Factor Factor To Find F To Find P To Find F To Find P To Find A Given P. Given F. Given A Given A Given F FIP PIF FIA PIA AIF 1.1200 0.8929 1.0000 0.8929 1 .0000 1.2544 0.7972 2.1200 1.6901 0.4717 1.4049 0.7118 3.3744 +2.4018 0.2963 1.5735 0.6355 4.7793 3.0373 0.2092 Capital Recovery Factor To Find A Given P AIP 1.1200 0.5917 0.4163 0.3292 e Search Given F AIF Given P FIP 1.1200 1.2544 1.4049 1.5735 1.7623 1.9738 2.2107 2.4760 2.7731 3.1058 Given F PIF 0.8929 0.7972 0.7118 0.6355 0.5674 0.5066 0.4523 0.4039 0.3606 0.3220 Given A FIA 1.0000 2.1200 3.3744 4.7793 6.3528 8.1152 10.0890 12.2997 14.7757 17.5487 Given A PIA 0.8929 1.6901 2.4018 3.0373 3.6048 4.1114 4.5638 4.9676 5.3282 5.6502 1.0000 0.4717 0.2963 0.2092 0.1574 0.1232 0.0991 0.0813 0.0677 0.0570 Given P / 1.1200 0.5917 0.4163 0.3292 0.2774 0.2432 0.2191 0.2013 0.1877 0.1770 +