Write an inequality to represent the situation. Then, find its graph among the options.
Answer: C Explanation: See solution.
Practice makes perfect
The phrase no less than 76 ^(∘) F indicates that the water temperature must be greater than or equal to 76 ^(∘) F. The temperature is currently 74 ^(∘)F, which is lower than the minimum expected. Let's calculate the difference between the minimum desired and the current temperature.
76^(∘)F - 74^(∘)F=2^(∘)F
To reach the minimum expected, the temperature must be raised by 2 ^(∘) F. Let x be the number of degrees the temperature needs to increase. We can write an inequality to illustrate the situation.
x≥ 2
This inequality represents all numbers greater than or equal to 2. Notice that x can equal 2, which we show with a closed circle on a number line.
