Refer to Where Is Niagara Falls? for a complete version of this text. In Chapter 3, people realize that building a bridge across the gorge of Niagara Falls will bring more tourists to the area.

Which detail best explains why building the first bridge to cross the gorge is such a difficult task?

“Even at the narrowest spot, the gorge was eight hundred feet wide.”

“But there was still one thing missing—something the businessmen knew they needed.”

“A ferryboat was built to take people from the US side to Canada.”

“…tourists had a perfect view of some of the crazy, dangerous things some people would soon do…”

Where’s the picture or data?

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!