Answer:
Ambitious
In this case, you have to multiply the price of the one way journey ($2.65) by 8 (as this is the number of individual journeys made in one week. It's gives you $21.20. As he has 1 bottle of water at $1.45 each day for four days, you have to multiply these together, giving you $5.80 You then have to add together $21.20 and $5.80, giving you $27. Therefore, it costs Edgar $27 a week
Step-by-step explanation:
318.50 x .30 = 95.55 discount.
318.50 - 95.55 = 222.95 is the total bill
![\displaystyle\\Answer:\ x=\sqrt{2}\ \ \ \ \ x=-\sqrt{2}\ \ \ \ \ x=\frac{ln5}{2}](https://tex.z-dn.net/?f=%5Cdisplaystyle%5C%5CAnswer%3A%5C%20x%3D%5Csqrt%7B2%7D%5C%20%5C%20%5C%20%5C%20%5C%20x%3D-%5Csqrt%7B2%7D%5C%20%5C%20%5C%20%5C%20%5C%20x%3D%5Cfrac%7Bln5%7D%7B2%7D)
Step-by-step explanation:
![5x^2-x^2e^{2x}+2e^{2x}=10](https://tex.z-dn.net/?f=5x%5E2-x%5E2e%5E%7B2x%7D%2B2e%5E%7B2x%7D%3D10)
![Let:\ x^2=t \ \ \ \ \ e^{2x}=v\\Hence,\\5t-tv+2v^2=10\\5t-tv+2v^2-10=10-10\\5t-tv-10+2v^2=0\\t(5-v)-2(5-v)=0\\(5-v)(t-2)=0\\5-v=0\\5-v+v=0+v\\5=v\\5=e^{2x}](https://tex.z-dn.net/?f=Let%3A%5C%20x%5E2%3Dt%20%20%5C%20%5C%20%5C%20%5C%20%5C%20e%5E%7B2x%7D%3Dv%5C%5CHence%2C%5C%5C5t-tv%2B2v%5E2%3D10%5C%5C5t-tv%2B2v%5E2-10%3D10-10%5C%5C5t-tv-10%2B2v%5E2%3D0%5C%5Ct%285-v%29-2%285-v%29%3D0%5C%5C%285-v%29%28t-2%29%3D0%5C%5C5-v%3D0%5C%5C5-v%2Bv%3D0%2Bv%5C%5C5%3Dv%5C%5C5%3De%5E%7B2x%7D)
<em>Prologarithmize both parts of the equation:</em>
![ln5=lne^{2x}\\ln5=2x*lne\\ln5=2x*1\\ln5=2x\\](https://tex.z-dn.net/?f=ln5%3Dlne%5E%7B2x%7D%5C%5Cln5%3D2x%2Alne%5C%5Cln5%3D2x%2A1%5C%5Cln5%3D2x%5C%5C)
<u><em> Divide both parts of the equation by 2:</em></u>
![\displaystyle\\x=\frac{ln5}{2}](https://tex.z-dn.net/?f=%5Cdisplaystyle%5C%5Cx%3D%5Cfrac%7Bln5%7D%7B2%7D)
![t-2=0\\t-2+2=0+2\\t=2\\x^2=2\\x=\sqrt{2} \\x=-\sqrt{2}](https://tex.z-dn.net/?f=t-2%3D0%5C%5Ct-2%2B2%3D0%2B2%5C%5Ct%3D2%5C%5Cx%5E2%3D2%5C%5Cx%3D%5Csqrt%7B2%7D%20%5C%5Cx%3D-%5Csqrt%7B2%7D)
Answer:
Step-by-step explanation:
The answer is A
The current weight
is 15% less than the weight Angela had 1 year ago (
). Or we can write,
.
Thus Angela,s current weight is 85% of her weight one year ago.