Look at this system of equations. – 3x+7y= – 1
– 15x+30y= – 2

What value of d will make this system have the same solution?
– 3x+7y= – 1
dy=3

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

The anwser cause i do not understand just plez