Answer:
picture?
Step-by-step explanation:
Answer:
hight school sucks
Step-by-step explanation:
Total minutes per day 8.2x365 day in a year =2993 minuets of shower x17.2 gallons of water =51,479.6 of water used in total shower per year!
First isolate the power of 10 on the right side by dividing both sides by 5:
![100=5\cdot10^{0.3t}\implies20=10^{0.3t}](https://tex.z-dn.net/?f=100%3D5%5Ccdot10%5E%7B0.3t%7D%5Cimplies20%3D10%5E%7B0.3t%7D)
Now you're free to take the logarithm and simplify where you can:
![\log_{10}20=\log_{10}10^{0.3t}=0.3t\log_{10}10=0.3t](https://tex.z-dn.net/?f=%5Clog_%7B10%7D20%3D%5Clog_%7B10%7D10%5E%7B0.3t%7D%3D0.3t%5Clog_%7B10%7D10%3D0.3t)
Then solve for
:
![t=\dfrac{\log_{10}20}{0.3}\approx4.34](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B%5Clog_%7B10%7D20%7D%7B0.3%7D%5Capprox4.34)