-3x-5y=-7 -4x+5y=14 solve by elimination

The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /