Amass weighing 16 lb stretches a spring 8/5 ft. the mass is attached to a viscous damper with a damping constant of 2 lb- sec/ft. the mass is set in motion from its equilibrium position with a downward velocity of 5 in/sec.
find the position x of the mass at any time t. plot x versus t. if a force of 0.5 sin (2t) exerted to the system, describe the motion after a very long period of time.

Find x & pleeeeaaaassseeee me !

The height of a triangle is 4 in. greater than twice its base. the area of the triangle is no more than 168 in.^2. which inequalitycan be used to find the possible lengths, x, of the base of the triangle?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?