2x^2=(3root2)^2
2x^2=9(2)
x^2=9
x= 3,-3
x=3 because your side length can’t be negative.
The fence is 26*7=182 square feet. 1 gallon is enough for 350 square feet and x for 182 square feet. => x=182/350=0.52 gallons. I hope I'm right.
From April to December =9 months
the depreciation expense
3,600×(9÷12)=2,700
3a plus 7. you group the whole numbers together and than the a's. so 3+4 is 7. 2a + a is 3a.