Answer:
it would be 5n
Step-by-step explanation:
10+8=18 and 13+5=18

-8400/68 simplifies to to -2100/17, dolphins/year, so 2100 less dolphins every 17 years.
and we can just divide those to get the decimal amount of -123.53, which means, 123.53 less dolphins every year.
of course, there's no such a thing as 0.53 of a dolphin, so, we can say "about" 123 less dolphins per year.
-4 as if it was -1/4 that would mean it goes to right 4 times and down 1
12. 4(s+5)
4s+20
15. 2(3r-12)
6r-24
18. -3(16-3d)
9d-48
Answer:
what
Step-by-step explanation: