HELP ASAP!!! 20 POINTS! PLEASE!! I WILL GIVE BRAINLIEST!!!

The following relates three quantities: Force (F), mass (m), and acceleration (a).

F = ma

(A) Solve this equation for a.

(B) Let the force be units and the mass be m = 10 units. What is the acceleration, a?

(C) Let the force be F = 25 units and the acceleration be a = 5 units. What is the mass, m?