Step-by-step explanation:
Given:
x = 26214.47
s = 5969.25
n = 15
t = 2.046
The confidence interval is:
CI = x ± t (s / √n)
CI = 26214.47 ± 2.046 (5969.25 / √15)
CI = (23061.06, 29367.88)
Answer: 169.52
Step-by-step explanation
%increase which is 5% =100 x final - initial
---------------------
initial
the initial is $169.52
and the final $178
Answer:
8,000
Step-by-step explanation:
You can simplify it to (-4+24)^3a
Answer:

Step-by-step explanation:
According to the Product Rule for Exponents, 
a = 7
m = 9
n = 4
So,

So, the answer is
.
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Answer:
gas = $0.23, electricity = $0.10
Step-by-step explanation: