Step-by-step explanation:
The first term of the AP i.e a = 33
and common difference i.e d = 28-33 = -5
So, 60th term = a +(n-1)d = a+ 59d
= 33 + 59( -5)
= 33- 295
= - 262
6.05 x 10^5 would be your answer.
I hope this helps!
B is the answer there is a common denominator y’a welcome
I believe that they typo meant 300 fossils of which 21% are snail shells.
Since % means per one hundred...
300(21/100)=63
Elmer has 63 fossilized snail shells.
