Hi i need the answer to this

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

Can someone me with these two circle theorem questions asap?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with