PLEASE HELP ME I'M GIVING 40 POINTS AND BRANLIEST ASAP (attached is an image)
Diana and Joby wrote the following proofs to prove that vertical angles are congruent. Who is correct?

Diana is correct, but Joby is not.
Both Diana and Joby are correct.
Neither Diana nor Joby is correct.
Joby is correct, but Diana is not.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

answer: what is the question you're trying to ask?

step-by-step explanation:

discount price = (original price)(1 – 0.15)

is the right answer   on edge