Plug in -4 for X and solve
Answer:
The appropriate answer is "144".
Step-by-step explanation:
Given:
Population standard deviation,
Margin of error,
%
Or,
Now,
Critical value,
= 
= 
= 
The minimum sample size will be:
⇒ 
By putting the values, we get
or,
D.
By looking at the scatterplot, we can identify the ‘trend’, or the general outline of the dots and where they’ll be. Using this, we can predict where a given dot will be in the sequence.
Since the dot for 3 chapters is at 80(roughly) and the dot for 5 chapters is at 140(at the lowest), we can infer that the dot for four chapters will be somewhere in the range of 81-139. From there, we can rule out 140 and 150 as answers, and we can use an inference to pick 120 as the answer.
Hope this helps! :)
Answer:
Thus, a product that normally costs $4 with a 70 percent discount will cost you $1.20, and you saved $2.80. You can also calculate how much you save by simply moving the period in 70.00 percent two spaces to the left, and then multiply the result by $4 as follows: $4 x . 70 = $2.80 savings.
Step-by-step explanation:
C is the answer if you add 2 to both numbers it will give you 12 and 10
