Answer:
x = 2
Step-by-step explanation:
First you must subtract x to both sides leaving you with 2x + 4=8 and you subtract 4 to both sides giving you 2x=4 and lastly to get the x by itself you divide both sides by 2 leaving you with x=2
x is equal to 2
2x+4=8
2x=4
x=2
C
3.5 gallons a week
Well 64 gl Oz is basically half a gallon. So half a gallon of water a day would result in 0.5*7 (7 days in a week) and you would get 3.5 gallons.
B. 50
5^2 +7*3 +4 = 25+21+4
= 25+25
= 50
