If the sum of twice a number and - 7 is increased by 8 the result is 16 greater than the opposite of the number. what is the number?

Ineed in figuring out this problem.

What are the values of a, b, and c in the quadratic equation 0 = x2 – 3x - 2? a = 1, b = 3, c = 2 a=, b = -3,c=-2 a = 1, b = 3, c= 2 a = 1.0= -3, c = 2

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55