One day susan's mom gave her a bag of candy. three days later she had 28 pieces of candy. eight days after her mom gave her the candy, she had 13 pieces of candy. if she ate the same number of candies each day, how many pieces of candy were in the bag originally.

the answer is ! ?

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.

combine all like terms then its just a 2 step equation

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

hope this !