Answer:

Step-by-step explanation:
The general exponential function is,

The points given in the table are,

Putting
in the general equation, we get


And


Putting the value of a,


Now the exponential function becomes,

Answer:
15
Step-by-step explanation:
This is a Pythagorean theorem problem. You must do a^2+b^2=c^2
9^2+12^2=225
then, we must find the square root of 225 which is 15.
hope this helps -Cam <3
You can find percentages like this by taking the total number of questions dividing it by 100 to find out how much each question was worth, then multiplying by the number correct.
So, 85 ÷ 100 ≈ 1.18
1.18 x 68 ≈ 80
So, the score was 80%.