Answer:

Step-by-step explanation:

1 hour equals 60 minutes.
Divide the minutes by 60 to find the decimal portion of the time:
21 minutes / 60 = 0.35
Now add that to 3 hours to get decimal hours:
3 hours 21 minutes as a decimal would be 3.35 hours
34,860
You take 781 books a second and multiply that by 60 since there’s 60 seconds in a minute
Once you add all the measurements together, you'll be left with 7.875 gallons of water. Merely convert the gallons of water into pints, and you're left with 63 pints of water being added into the fish pond! <span />
7(x+14)=-343
Use distributive property
7x+98=-343
Subtract 98 for both side
7x=-441
Divided 7 for both side
x=-63. Hope it help!