42.7 + 52.12 please answer this

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Interpret the following expression (5y^2-7)^3/(2y)^2

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)