The function that represents the scenario is option 1: y = 10 - 0.2x.
To determine how long it will take for the sparkler to burn down, we set y equal to zero 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.
Which function represents the scenario below?
A: Sparkler
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
(option 1: y = 10 - 0.2x. Option 2: y = 12 * (2)^x)
Part B: How long will it take the sparkler to burn down? (When will the height be zero?)
-50 Seconds
50 Seconds
10 seconds
10.2 Seconds
1 answer