Please help :)

Describe what moves you could use to create the transformation of the original image shown at right

How many $20 bills do you need to have to make $280

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36