Answer:
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They can buy any number of chairs fewer than four because 140-60=80
80 divide by 20 is 4
Inequalities help us to compare two unequal expressions. There exists no solution to the given set of inequalities.
<h3>What are inequalities?</h3>
Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.
The given Inequalities can be solved as,
5 - x > 7
-x > 7 - 5
-x > 2
x < -2
2x + 3 ≥ 13
2x ≥ 10
x ≥ 5
As per the solution of the two inequalities, the value of x should be less than -2 but at the same time, it should be more than or equal to 5, which is impossible. Thus, there is no solution for the given inequalities.
This can be confirmed by graphing the two inequalities, as shown below. Since there is no area in common between the two inequalities, there exists no solution to the given set of inequalities.
Learn more about Inequality:
brainly.com/question/19491153
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Since choices are given, we can test certain points:
Point E(4, -2): 2(4) + (-2) < 10 is true, and 2(4) - 4(-2) > 8 is also true.
Point A(-5, 4): 2(-5) + (4) < 10 is true, and 2(-5) - 4(4) > 8 is false. This narrows it down to either the first or second choices.
Point H(-4, -4): 2(-4) + (-4) < 10 is true, and 2(-4) - 4(-4) > 8 is false because it is exactly equal to 8, not greater than 8. Therefore H is not part of the solution set, and the correct answer is the 2nd choice: E, F, G.