College

Select the correct answer.

Kevin is baking bread for a family function. The initial temperature of the oven is twice the room temperature. He knows that yeast, a key ingredient, thrives within the temperature range of [tex]$90^{\circ} F$[/tex] to [tex]$95^{\circ} F$[/tex]. To facilitate yeast growth, Kevin decreases the temperature of the oven by [tex]$44^{\circ} F$[/tex].

Which inequality represents the given situation?

A. [tex]$90 \geq 2x + 44 \leq 95$[/tex]

B. [tex]$90 \leq 2x - 44 \leq 95$[/tex]

C. [tex]$90 \geq 2x - 44 \leq 95$[/tex]

D. [tex]$90 \leq 2x + 44 \leq 95$[/tex]

Answer :

To solve the problem, let's follow a step-by-step approach:

1. Identify Key Variables:
- Let [tex]\( x \)[/tex] represent the room temperature in degrees Fahrenheit.
- According to the problem, the initial oven temperature is twice the room temperature, which means it's [tex]\( 2x \)[/tex].

2. Yeast Temperature Range:
- Yeast thrives between [tex]\( 90^\circ F \)[/tex] and [tex]\( 95^\circ F \)[/tex].

3. Adjust the Oven Temperature:
- To facilitate yeast growth, Kevin decreases the initial oven temperature by [tex]\( 44^\circ F \)[/tex].
- Thus, the effective temperature for yeast is [tex]\( 2x - 44 \)[/tex].

4. Set Up the Inequality:
- We need the temperature [tex]\( 2x - 44 \)[/tex] to be within the yeast thriving range:
[tex]\[
90 \leq 2x - 44 \leq 95
\][/tex]

5. Identify the Correct Answer:
- This inequality corresponds to option B in the choices provided:
[tex]\[ B. \, 90 \leq 2x - 44 \leq 95 \][/tex]

Therefore, the inequality that represents the given situation is option B.