They are all perfect squares
(9x+2)(9x+20
(9x+2)^2
2(3+6) = 6 + 12 = 18
10² = 100
10(10+10) = 100 + 100 = 200
Step-by-step explanation:
questions 8, obviously the mid part of the parabola is 3, that is the axis of symmetry.
question 9, only one solution because you only have one parabola.
Answer:
69 people got in free over the 2 days
Step-by-step explanation:
6742/175=38
5487/175=31
31+38=69
