So pls me on this one:

leanne has 15 small pieces of dough that are each to make 15 biscuits she already cut some 1/2 ounce pieces from a 6-ounce ball of dough how many more 1/2 ounce pieces dose she still needs to make 15 biscuits? pls, show work!

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