Answer:
Both candles will have the same height after 4 hours.
Step-by-step explanation:
The equation for the amount of candle remaining can be given by the following equations:

In which Q(t) is the amount after t hours, Q(0) is the initial amount and a is how much it decreases, in inches, per hour.
Red candle:
8 inches tall and burns at a rate of 7 divided by 10 inch per hour. This means that
. So

Blue candle:
6 inches tall and burns at a rate of 1 divided by 5 inch per hour. This means that
. So

After how many hours will both candles be the same height ?
This is t when


![0.2t - 0.7t = 6 - 8[/yrc][tex]-0.5t = -2](https://tex.z-dn.net/?f=0.2t%20-%200.7t%20%3D%206%20-%208%5B%2Fyrc%5D%3C%2Fp%3E%3Cp%3E%5Btex%5D-0.5t%20%3D%20-2)
Multiplying by (-1)



Both candles will have the same height after 4 hours.
So its this answer because the y is equal to the x plus the y-intercept but the y is 0 so; y=5/2x
Answer: W(x + 4) = x + 8
<u>Step-by-step explanation:</u>
I am assuming the "t" is supposed to be an addition sign "+"
w(x + 4) means to replace all of the x's in the given function with x + 4
W(x) = x + 4
W(x + 4) = (x + 4) + 4
= x + 8
Answer:
16 bottles
Step-by-step explanation:
you can buy 16 bottles
The answer is 7/10
the 7 is in the tenth place making the denominator a 10 and no same number goes into both 7 and 10.