Answer:
217
Step-by-step explanation:
- 7 × 31 = 217
I hope this helps!
Since it starts with 2 envelopes, subtract 2 from 17 to get how many and in all 3 packs.
17 - 2 = 15
Now, we divide that number by 3 to get how many are in each envelope.
15 / 3 = 5
There are 5 envelopes in each pack.
Answer:
-3n + 18
Step-by-step explanation:
an = dn + (a - d)
The difference is -3.
The first term is 15.
an = -3n + (15- (-3))
an = -3n + 15 + 3
an = -3n + 18
Answer:
c
Step-by-step explanation:
All the animals will go extinct.
15
Take the square root of 225
