Answer:
r = 2
Step-by-step explanation:
(2-3)/(6-5)
= -1/1
= -1
3x^2 + 5x + 25 when x = 3
= 3(3)^2 + 5(3) + 25
= 3(9) + 15 + 25
= 27 +15 + 25
= 67