Mathematical relationships

A.) A charged particle is moving through a magnetic field and experiences a magnetic force, F. Determine, in terms of F., the force on the particle if its velocity increases by a factor of 7.
Foˣ ___
B.) A current-carrying wire in a magnetic field experiences a magnetic force, F. Determine, in terms of Fo, the force on the wire if the current through the wire increases by a factor of 4.
Foˣ___
C.) Two current-carrying wires are exerting a force, Fo, on each other. Determine, in terms of Fo, the force the wires will exert on each other if the current through each wire decreases by a factor of 9.
Foˣ___