Question

After 6 hours of burning, it has a height of 25.2 centimeters. after 24 hours of burning , its height is 19.8 centimeters, what is the height of the candle after 19 hours​

need answers quickly please

Answer 1

21.3 cm

Explanation:

first find the rate of change (RISE/RUN)

`(19.8-25.2)/(24-6)` which gives you -0.3

Next, create an equation. You can choose any point, but I chose (6,25.2) because it is given.

y - 25.2 = -0.3(x-6)

y - 25.2 = -0.3x + 1.8

y = -0.3x + 27

Finally, plug in 19 for x...

y = -0.3(19) + 27 = 21.3 cm