So the original shoes cost 100%, but you are paying 15% less than 100%. 100-15 is 85, so 85% or .85 is your answer.
Answer: A & C
Step-by-step explanation:
![i=\sqrt{-1}](https://tex.z-dn.net/?f=i%3D%5Csqrt%7B-1%7D)
![\sqrt{-1} *\sqrt{4} =\sqrt{-4}](https://tex.z-dn.net/?f=%5Csqrt%7B-1%7D%20%20%20%2A%5Csqrt%7B4%7D%20%3D%5Csqrt%7B-4%7D)
You can also simplify the above by taking the -4 out of the radical
It becomes 2 x
, which can be simplifed to C
You want to "solve" this formula for s.
7s+4
If t = ----------- , then 2t = 7s + 4. Subtract 4 from both sides. Then
2
2t - 4
7s = 2t - 4, and s = -------------- (answer)
7