HELP PLEASE
The inequality - 7(x - 4) < 84 is given.
Part A: Solve the inequality and show every step of your work. (4 points)
Part B: Explain in words how to graph the solution to the inequality on a number line. (4 points)
Part C: Find two values that would make the inequality true. Explain how you know the values are solutions to the inequality. (4 points)

Respuesta :

Answer:

Part A:

Starting with −7(x − 4) < 84:

Distribute the -7 to get -7x + 28 < 84.

Subtract 28 from both sides to get -7x < 56.

Divide both sides by -7, remembering that dividing by a negative number flips the inequality sign, to get x > -8.

Therefore, the solution to the inequality is x > -8.

Part B:

To graph the solution to the inequality on a number line, we would start by drawing a number line and marking a point at -8. Since the solution is x > -8, we would draw an open circle at -8 to indicate that -8 is not included in the solution. Then, we would draw an arrow pointing to the right to indicate that all values greater than -8 are included in the solution.

Part C:

To find two values that would make the inequality true, we can choose any two values greater than -8 and substitute them into the inequality to see if they satisfy it. For example, if we choose x = 0, we get:

-7(0 - 4) < 84

-7(-4) < 84

28 < 84

Since 28 is less than 84, this inequality is true when x = 0. Similarly, if we choose x = 10, we get:

-7(10 - 4) < 84

-7(6) < 84

-42 < 84

Since -42 is less than 84, this inequality is also true when x = 10. We know these values are solutions to the inequality because they make the inequality true when substituted into it.

Hope that helps!

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