Question
Khloe is preheating her oven before using it to bake. Khloe wants to predict the final temperature after xx minutes. She wrote the equation y, equals, 20, x, plus, 78y=20x+78, where yy represents the final temperature in degrees Fahrenheit. What is the meaning of the yy-value when x, equals, 1x=1?
Answer
Multiple Choice Answers
The oven's temperature after 0 minutes.
The time when the oven's temperature is 0, degrees0
∘
.
The rate of change in the oven's temperature over time.
The oven's temperature after 1 minute.
Answer
Multiple Choice Answers
The oven's temperature after 0 minutes.
The time when the oven's temperature is 0, degrees0
∘
.
The rate of change in the oven's temperature over time.
The oven's temperature after 1 minute.
Answers
GPT-4o mini
To understand what the \(y\)-value represents when \(x = 1\) in the equation \(y = 20x + 78\), we can substitute \(x\) with 1:
\[
y = 20(1) + 78
\]
Calculating this gives:
\[
y = 20 + 78 = 98
\]
So when \(x = 1\), the final temperature \(y\) is 98 degrees Fahrenheit.
Looking at the multiple-choice answers provided, the answer that corresponds to this is:
**The oven's temperature after 1 minute.**
\[
y = 20(1) + 78
\]
Calculating this gives:
\[
y = 20 + 78 = 98
\]
So when \(x = 1\), the final temperature \(y\) is 98 degrees Fahrenheit.
Looking at the multiple-choice answers provided, the answer that corresponds to this is:
**The oven's temperature after 1 minute.**