4. On the way to the movies, you get pulled over for speeding. The ticket costs $120 plus $20 for every mph above the speed limit you were driving. If your ticket costs $280, how many mph above the speed limit were you driving? * 20x+280=120
120-20x=280
120x+20=280
120+20x=280

120+20x=280

Step-by-step explanation:

280-120=160

160/20=8

The correct answer is the last one, 120+20x=280

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.