How much active ingredient is contained in 250 mL of a 15% (v/v) solution?

During transport, a female patient who is restrained begins to cry and states that she is sorry for becoming violent and will not behave in that manner anymore. She requests that the restraints be removed because they are hurting her legs and she does not wish to be restrained any longer. After ensuring that the restraints are not too tight and not harming the extremities, you would:

A) Remove the leg restraints, but not the arm restraints. B) Remove the restraints, but reapply if the patient becomes combative. C) Leave the restraints in place until patient care is transferred to the hospital. D) Free one leg from the restraint, but leave the rest in place.

Wood backboard

a. +5 kVp or +25%-30% b. +5-7 kVp or +50%-60% mAs c. –15%-20% kVp d. +50% mAs e. +35% mAs f. –8% kVp g. +35%-50% mAs