A cross section is the shape we get when cutting straight through an object. The cross section of this object is a triangle. It is like a view into the inside of something made by cutting through it.
(2x-1)×4=8x-4
I hope it helps ;)
1) I use an interest program on my calculator. You could also use the equation listed in the math textbook. Principle=2500 Rate=0.025 Years=3 No.compounds/yr=4 Answer is $2,694.08
2) All positives
3) Square root of 343
4) Square root of 48
I hope that helps. :)