Answer:
It is an arithmetic sequence.
Step-by-step explanation:
64 - 7 = 57
121 - 64 = 57
178 - 121 = 57
We have a common difference of 57, so it is arithmetic.
The explicit formula for the nth term
= 7 +57(n - 1).
time taken to complete the second half=65.49-31.73=33.76 seconds
it's A
d = -12
Add -8 -5 +7
take that number : -6
72 divided by -6 = -12
so x=5
substituting for x in the equation we get:
Ans C: 16
