What must be the value of x so that lines a and b are parallel lines cut by transversal f?

the value of x is ? i thought it was 84 but thats wrong

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Which shows how to solve the equation 3/4x=6 for x in one step?

What is 4(x2 – 3x) + 12x2 + x simplified? f 4x2–3x h 16x2–11x g13x2–2x i16x2–12x