Answer:
the sequence is geometric sequence with common ratio (-2).
Option : D is correct.
Step-by-step explanation:
In this question table is given as
n 1 2 3 4 5
f(n) 48 -96 192 -385 768
We have to find out if the sequence is arithmetic or geometric.
For Arithmetic sequence :
Difference should be common in each term of fees.
common difference = f(2) - f(1)
= -96 -48 = -144
similarly = f(3) - f (2) = 192 + 96 = 288
Here, ≠ so the sequence is not an arithmetic sequence.
For Geometric sequence :
Ratio should be common in each term of f(n)
Common ratio =
Therefore, the sequence is geometric sequence with common ratio (-2).
Option : D is correct.
Mean = sum of the observations
--------------------------------
<span> number of observations
</span>=> -3 + (-8) + 12 +(-15)+ 9
-----------------------------------
5
=> mean = -1 ..
Hope it helps!!!!
i think the second one is A
Answer:
a) 
, b) 
, c) Third day.
Step-by-step explanation:
a) The equation to represent Layla's fees is:
b) The equation to represent Sam's fees is:
c) Both earn the same amount for dog sitting at the third day.
For the first one:tick the second to last.
for the second: tick the first circle.
for the third: tick the second to last.
for the forth: tick the second.
for the fifth: tick the last.
for the last one: tick the second.
Hope it helps...
