A buoy floating in the ocean is bobbing in simple harmonic motion with period 3 seconds and amplitude 13in. Its displacement d from sea level at time t=0 seconds is 0in, and initially it moves downward. (Note that upward is the positive direction.) Give the equation modeling the displacement d as a function of time t.

Valentino starts with a population of 1,500 amoebas that increases 35% in size every hour for a number of hours, h. the expression 1,500(1+0.35)h finds the number of amoebas after h hours. which statement about this expression is true? a. it is the initial population raised to the growth factor after h hours. b. it is the sum of the initial population and the percent increase. c. it is the sum of the initial population and the growth factor after h hours. d. it is the product of the initial population and the growth factor after h hours.

Pls! does anybody know a shortcut for answering these types of questions in the future?

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?