Over the past several years, there has been a dramatic increase in obesity rates in the United States. The CDC website noted that approximately 16 out of 100 adults in the United States were obese in 1995.
What was the percentage of adults who were obese in 1995?
O 0.016% of American adults were obese in 1995.
O 6.25% of American adults were obese in 1995.
16% of American adults were obese in 1995,
o 1.6% of American adults were obese in 1995.
0.16% of American adults were obese in 1995.

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!