23.44 / 20 = 1.172 rounds to 1.17 per lb <== this is cost per lb...this is telling u how much each lb of dog food costs
20 / 23.44 = 0.85....this is lbs per dollar....this is telling u that u r getting 0.85 lbs for a dollar
The answer if you need helo with math like this come to me -25
Answer:
Step-by-step explanation:
you're going to have a vertical line at -1, and then shade the region to the left. The line should be dashed, not solid.
say we're going to add "x" gallons of water, now how many gallons of alcohol is in pure water? well 0%, and 0% of "x" is (0/100) * x = 0.
the 3 gallons we know are 100% alcohol, how many gallons of alcohol is in it? well (100/100) * 3 = 3.
the resulting mix will have x + 3 gallons total and it's going to be 15% alcohol, how many gallons of alcohol is that? (15/100) * (x+3).
now, the amount of alcohol never increased, so the original 3 gallons of only alcohol will remain even after the water has been added, so.
![\begin{array}{lcccl} &\stackrel{solution}{quantity}&\stackrel{\textit{\% of }}{amount}&\stackrel{\textit{gallons of }}{amount}\\ \cline{2-4}&\\ \textit{pure water}&x&0.00&0\\ \textit{pure alcohol}&3&1.00&3\\ \cline{2-4}&\\ mixture&x+3&0.15&0.15(x+3) \end{array} \begin{array}{llll} \\[3em] \leftarrow \textit{this amount}\\\\ \leftarrow \textit{must be equal to this one} \end{array} \\\\\\ 3 = 0.15(x+3)\implies 3=0.15x+0.45\implies 2.55=0.15x \\\\\\ \cfrac{2.55}{0.15}=x\implies 17=x](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Blcccl%7D%20%26%5Cstackrel%7Bsolution%7D%7Bquantity%7D%26%5Cstackrel%7B%5Ctextit%7B%5C%25%20of%20%7D%7D%7Bamount%7D%26%5Cstackrel%7B%5Ctextit%7Bgallons%20of%20%7D%7D%7Bamount%7D%5C%5C%20%5Ccline%7B2-4%7D%26%5C%5C%20%5Ctextit%7Bpure%20water%7D%26x%260.00%260%5C%5C%20%5Ctextit%7Bpure%20alcohol%7D%263%261.00%263%5C%5C%20%5Ccline%7B2-4%7D%26%5C%5C%20mixture%26x%2B3%260.15%260.15%28x%2B3%29%20%5Cend%7Barray%7D%20%5Cbegin%7Barray%7D%7Bllll%7D%20%5C%5C%5B3em%5D%20%5Cleftarrow%20%5Ctextit%7Bthis%20amount%7D%5C%5C%5C%5C%20%5Cleftarrow%20%5Ctextit%7Bmust%20be%20equal%20to%20this%20one%7D%20%5Cend%7Barray%7D%20%5C%5C%5C%5C%5C%5C%203%20%3D%200.15%28x%2B3%29%5Cimplies%203%3D0.15x%2B0.45%5Cimplies%202.55%3D0.15x%20%5C%5C%5C%5C%5C%5C%20%5Ccfrac%7B2.55%7D%7B0.15%7D%3Dx%5Cimplies%2017%3Dx)
The answer is
C.No, the difference between the sample result and what is expected is not extreme enough.
Also can I get brainliest please