I believe it's all correct.
Answer: Choice ARaising something to the 1/4th power is the same as applying the 4th root to that expression. Raising an expression to the 1/n power is the same as applying the nth root.
Rule:
![x^{1/n} = \sqrt[n]{x}](https://tex.z-dn.net/?f=x%5E%7B1%2Fn%7D%20%3D%20%5Csqrt%5Bn%5D%7Bx%7D%20)
(if the text is too small it basically says x to the (1/n) = square root with a small 'n' all over x)
The answer is s<span> + </span>l<span> < 30</span>
8s<span> + 12</span>l<span> ≤ 160</span>
41 divided by 5 = 8.2
She should pour 8.2 pounds in each dish
By rounding 842 to 800, she can multiply 800 by 3 to get 2,400.
then, multiply 40 by 3, you get 120 and add the two together to get 2,520
this shows her answer is not necessary reasonable