It will be $32.40 for 15 gallons if thats what your asking.
Hello!
You add like terms
![3n^{2} + - 8n^{2} = -5n^{2}](https://tex.z-dn.net/?f=%203n%5E%7B2%7D%20%2B%20-%208n%5E%7B2%7D%20%3D%20%20-5n%5E%7B2%7D%20)
![-5n + -3n = -8n](https://tex.z-dn.net/?f=-5n%20%2B%20-3n%20%3D%20-8n)
![6 + -2 = 4](https://tex.z-dn.net/?f=6%20%2B%20-2%20%3D%204)
Put all the answers together
![-5n^{2} -8n+4](https://tex.z-dn.net/?f=-5n%5E%7B2%7D%20-8n%2B4)
The answer is
![-5n^{2} -8n+4](https://tex.z-dn.net/?f=-5n%5E%7B2%7D%20-8n%2B4)
Hope this helps!
Step-by-step explanation:
❀ ![\underline{ \underline{ \text{Given}}} :](https://tex.z-dn.net/?f=%20%5Cunderline%7B%20%5Cunderline%7B%20%5Ctext%7BGiven%7D%7D%7D%20%3A%20)
❀ ![\underline{ \underline{ \text{To \: find}}} :](https://tex.z-dn.net/?f=%20%5Cunderline%7B%20%5Cunderline%7B%20%5Ctext%7BTo%20%5C%3A%20find%7D%7D%7D%20%3A%20)
❀ ![\underline{ \underline{ \text{Solution}}} :](https://tex.z-dn.net/?f=%20%5Cunderline%7B%20%5Cunderline%7B%20%5Ctext%7BSolution%7D%7D%7D%20%3A%20)
~Plug the value of y at first :
➾ ![\sf{ {-4}^{2} + 5 \times (-4 )+ 1}](https://tex.z-dn.net/?f=%20%5Csf%7B%20%7B-4%7D%5E%7B2%7D%20%20%2B%205%20%5Ctimes%20%28-4%20%29%2B%201%7D)
~ Evaluate the power : 4²
➾ ![\sf{16 + 5 \times (-4 )+ 1}](https://tex.z-dn.net/?f=%20%5Csf%7B16%20%2B%205%20%5Ctimes%20%28-4%20%29%2B%201%7D)
Follow the BODMAS { Bracket , Of , Division , Multiplication , Addition and Subtraction } rule :
~Multiply -5 and 4
➾ ![\sf{16 + (-20)+ 1}](https://tex.z-dn.net/?f=%20%5Csf%7B16%20%2B%20%28-20%29%2B%201%7D)
~ Multiply the signs : ( + ) and ( - ) :
➾
~Add the numbers : 16 and 1
➾ ![\sf{17-20}](https://tex.z-dn.net/?f=%20%5Csf%7B17-20%7D)
~ Subtract 20 from 17
➾ ![\sf{-3}](https://tex.z-dn.net/?f=%20%5Csf%7B-3%7D)
![\pink{ \boxed{ \boxed{ \tt{⟿ \: Our \: final \: answer : -3}}}}](https://tex.z-dn.net/?f=%20%5Cpink%7B%20%5Cboxed%7B%20%5Cboxed%7B%20%5Ctt%7B%E2%9F%BF%20%5C%3A%20Our%20%5C%3A%20final%20%5C%3A%20answer%20%3A%20-3%7D%7D%7D%7D)
Hope I helped ! ♡
Have a wonderful day / night ツ
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Answer: 1/2 of 12 = 1/4 of 24 and 1/3 of 90 = 2/3 of 45
Step-by-step explanation: