which function represents the scenario below?
Each second a sparkler burns down the same amount.
x = the number of seconds that have passed
y= the height of the sparkler in inches
Answer: y = 10 - 0.2x
How long will it take the sparkler to burn down?
To find out how long it will take the sparkler to burn down completely, we set y = 0 and solve for x:
0 = 10 - 0.2x
0.2x = 10
x = 10 / 0.2
x = 50
Therefore, it will take the sparkler 50 seconds to burn down completely.