Answer: 2n^2+3n-4
1st differnce is 3, 7, 11, 15
2nd differnce is 4
so its 2n^2
we compare it to teh 2n^2 sequence
2 8 18 32 50
-1 2 9 20 35
difference is 3, 6, 9, 12,15
so it is 3n-4
Answer:

Step-by-step explanation:









12 adult elephants, 6 young elephants = 18 total :)
Answer:
1.) 3 hours 2.) 60km
Step-by-step explanation:
180km traveled in 3 hours. 180 divided by 3 = 60.