An object moves in simple harmonic motion with period 7 seconds and amplitude 2cm . At time t=0 seconds, its displacement d from rest is -2cm , and initially it moves in a positive direction. Give the equation modeling the displacement d as a function of time t .

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )