1. 6.25 x 10^0
2. 8.07 x 10^-1
1 hour 15 minutes is the correct answer
By looking at the equation and if the coefficient of x in both equations are the reciprocal of each other they are perpendicular. If two lines are parallel they have the same slope.
American deli and honey hot
5 hamburgers. because 4 times 5 is 20. I hope this helps