Directions: Use the integers -9 to 9, at most two times each, fill in the boxes to create an exponential growth function with the greatest possible y-intercept.

### Hint

How do each of the values you can choose affect the values of the y-intercept?

### Answer

The greatest possible y-intercept is 9 and can be gotten through an equation like:

y = 4 * 2^(x+0) + 5

y-intercept: 9

Source: Robert Kaplinsky

Why not the function 8×9^(x+9)+8 with the y-intercept 8(9^9+1)?

Oh I get it – the y-interceot is one digit only. Feel free to delete both my comments please!