Which of the following equations is quadratic? (a) x1x² + 1) = 0 (b) 5(4x + 2) = 3
(c) (x+3)(x + 4) = 5

(c) (x+3)(x+4)=5

Step-by-step explanation:

It's in factored form, and you would use the method of finding the perfect square to get the equation set to zero and find the solutions.

11 feet 6 inches and 8 feet 6 inches

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )