High School

Find a description that this equation represents:

Of the numbers 1, 2, 3, 4, and 5, which are solutions to the equation [tex]4x + 11 = 23[/tex]?

Select all descriptions that apply:

A. If you add eleven to four times a number, you get 23.
B. If you add four to eleven times a number, you get 23.
C. If you add eleven times a number to four, you get 23.
D. Eleven less than four times a number is 23.
E. Eleven more than four times a number is 23.
F. Four less than eleven times a number is 23.

Answer :

To find which numbers from the set {1, 2, 3, 4, 5} are solutions to the equation [tex]\(4x + 11 = 23\)[/tex], we can follow a step-by-step approach:

1. Understand the Equation: The equation given is [tex]\(4x + 11 = 23\)[/tex]. This means that if you take four times a number [tex]\(x\)[/tex] and add 11 to it, the result should be 23.

2. Isolate the Variable: To solve for [tex]\(x\)[/tex], we first need to isolate it. Start by subtracting 11 from both sides of the equation:
[tex]\[
4x + 11 - 11 = 23 - 11
\][/tex]
This simplifies to:
[tex]\[
4x = 12
\][/tex]

3. Solve for [tex]\(x\)[/tex]: Now, divide both sides by 4 to solve for [tex]\(x\)[/tex]:
[tex]\[
x = \frac{12}{4} = 3
\][/tex]

4. Verify the Solution: We have determined that [tex]\(x = 3\)[/tex]. We need to verify this by substituting it back into the original equation:
[tex]\[
4(3) + 11 = 12 + 11 = 23
\][/tex]
Since the left side equals the right side of the equation, [tex]\(x = 3\)[/tex] is indeed a solution.

5. Check Against the Set of Numbers: From the set {1, 2, 3, 4, 5}, the solution 3 fits perfectly.

6. Understand the Descriptions: We should identify which descriptions accurately represent the equation:
- Description A: "If you add eleven to four times a number, you get 23." This matches because [tex]\(4x + 11\)[/tex] equates to 23.
- Description E: "Eleven more than four times a number is 23." This is another way of expressing [tex]\(4x + 11 = 23\)[/tex]. Both descriptions A and E correctly describe the equation.

Therefore, the solution to the equation is [tex]\(x = 3\)[/tex], and the descriptions that fit the equation are A and E.