Elissa wants to set up a rectangular dog run in her backyard. she has 30 feet of fencing to work with and wants to use it all. if the dog run is to be x feet long, express the area of the dog run as a function of x.

a. a(x)=14x-x^2
b. a(x)=15x-x^2
c. a(x)=17x^2-x
d. a(x)=16x-x^2

The four students in the table below each recorded the time and distance traveled while exercising. exercising distance (miles) time (minutes) gia 2 30 harris 5 50 ian 3 40 jackson 4 80 which list ranks the students from fastest walker to slowest walker? jackson, gia, ian, harris harris, jackson, ian, gia harris, ian, gia, jackson jackson, harris, ian, gia