The rate at which a radioactive substance decay is proportional to the amount A(t) of the substance remaining at time t. At initial time of observation, the mass of this substance is 10g. Formulate the Initial-Value-Problem (IVP) for the amount A(t).

What could explain what happened when the time was equal to 120 minutes

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?

Me find the value of x each figure.