If 4 is invested at 5% interest compounded continuously, how much will the investment be worth in 25 years? ?

Which system of linear inequalites is represented by the graph?

What is the y intercept of f(x)=(1/2)^x?

If johnny ate 5 cans of sugar, but in the kitchen they only had 3. what did johnny eat? (he found a secret stash btw.)