I have to solve for ABC n round to nearest whole number​

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Me n o w. i need t h i s. 10 points

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