Which set of population data is the least dispersed from its mean?

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.