A relay race covers 1 1/2 kilometers and each runner on a team will run 1/4 of a kilometer

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?