See attachment for the graph of the inequality -1 ≤ x ≤ 3
<h3>What is a linear inequality?</h3>
A linear inequality is an inequality that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient
<h3>How to determine the correct graph?</h3>
In this question, the expression of the inequality is given as:
-1 ≤ x ≤ 3
The above means that the set of values of x is between -1 and 3 (-1 and 3 are inclusive of the values of x)
So, the possible values of x are -1, 0, 1, 2 and 3
When the graph of the inequality is plotted, the graph would have the following properties:
- x values = -1, 0, 1, 2 and 3
- Double closed circles or thick lines
Next, we plot the graph of the inequality -1 ≤ x ≤ 3
See attachment for the graph of the inequality -1 ≤ x ≤ 3
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The cost of 0.5 kg of bananas is 393.60 Colones as per the given conversion rates
Conversion rate of 1 USD to Costa Rican Colones = 518 Colones
The conversion rate of kg to pounds given in the question: 1 kg = 2.2025 lbs
Cost of one pound of bananas = $0.69
Bananas required to be purchased = 0.5kg
Converting 0.5kg bananas to pounds = 0.5*2.2025 = 1.10125 pounds
Cost of 1.10125 pound of bananas in dollars = 1.10125*0.69 = 0.7598
Cost of 1.1025 pounds of bananas in Colones = 0.7598*518 = 393.60 Colones
Hence, the cost is 393.60
Therefore, the cost of 0.5 kg bananas in Colones is 393.60 Colones
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Using the relation between standard deviation and variance it is concluded that the standard deviation for the population for the given variance is 7.1
<h3>What is the relation between standard deviation and sample variance? </h3>
In statistics, the two most crucial metrics are variance and standard deviation. While the variance is a measurement of how data points vary from the mean, standard deviation is a measure of the distribution of statistical data.
The square root of the variance yields the standard deviation, i.e.
Standard deviation = 
Given that sample, the variance is 49.7 and we have to calculate the standard deviation.
Standard deviation (σ) =
= 
= 7.0498
=7.1
Hence, the standard deviation for the population for the given variance is 7.1
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Answer:
the answer is e
Step-by-step explanation:
