The problem asks to find the truth set of the following inequalities and illustrate the answer on a number line. The inequalities are: a. $x + 4 > 3x$ b. $8x + 1 \le 4x - 3$ c. $4(x+2) < 5x - 1$ d. $2(x-2) \ge 5(x+1)$ e. $5x + 1 > 10 - x$

AlgebraInequalitiesLinear InequalitiesSolving InequalitiesNumber Line
2025/5/13

1. Problem Description

The problem asks to find the truth set of the following inequalities and illustrate the answer on a number line. The inequalities are:
a. x+4>3xx + 4 > 3x
b. 8x+14x38x + 1 \le 4x - 3
c. 4(x+2)<5x14(x+2) < 5x - 1
d. 2(x2)5(x+1)2(x-2) \ge 5(x+1)
e. 5x+1>10x5x + 1 > 10 - x

2. Solution Steps

a. x+4>3xx + 4 > 3x
Subtract xx from both sides:
4>2x4 > 2x
Divide both sides by 2:
2>x2 > x
So, x<2x < 2
b. 8x+14x38x + 1 \le 4x - 3
Subtract 4x4x from both sides:
4x+134x + 1 \le -3
Subtract 1 from both sides:
4x44x \le -4
Divide both sides by 4:
x1x \le -1
c. 4(x+2)<5x14(x+2) < 5x - 1
Distribute the 4:
4x+8<5x14x + 8 < 5x - 1
Subtract 4x4x from both sides:
8<x18 < x - 1
Add 1 to both sides:
9<x9 < x
So, x>9x > 9
d. 2(x2)5(x+1)2(x-2) \ge 5(x+1)
Distribute the 2 and the 5:
2x45x+52x - 4 \ge 5x + 5
Subtract 2x2x from both sides:
43x+5-4 \ge 3x + 5
Subtract 5 from both sides:
93x-9 \ge 3x
Divide both sides by 3:
3x-3 \ge x
So, x3x \le -3
e. 5x+1>10x5x + 1 > 10 - x
Add xx to both sides:
6x+1>106x + 1 > 10
Subtract 1 from both sides:
6x>96x > 9
Divide both sides by 6:
x>96x > \frac{9}{6}
Simplify the fraction:
x>32x > \frac{3}{2}
x>1.5x > 1.5

3. Final Answer

a. x<2x < 2
b. x1x \le -1
c. x>9x > 9
d. x3x \le -3
e. x>32x > \frac{3}{2} (or x>1.5x > 1.5)

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