7/8,42/48 determine whether each pair of ratios are equivalent ratios right yes or no

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Solve the system of equations y= 3/2 - 1, -x+ y =-3

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