Which equation has the solution of x=4

S-7< 3 i need answering this problem someone asap answer

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

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation