Question
Melt Away Weight Loss uses the regression equation
y = 1.8x + 1.2 to predict the weight loss of their clients.
In the equation:
x = the number of weeks on a diet
and
y = the total number of pounds lost.
Using the equation, how much weight did Steve lose in 4 weeks?
Responses
A 7.5 pounds7.5 pounds
B 8.4 pounds8.4 pounds
C 9.6 pounds9.6 pounds
D 10 pounds
y = 1.8x + 1.2 to predict the weight loss of their clients.
In the equation:
x = the number of weeks on a diet
and
y = the total number of pounds lost.
Using the equation, how much weight did Steve lose in 4 weeks?
Responses
A 7.5 pounds7.5 pounds
B 8.4 pounds8.4 pounds
C 9.6 pounds9.6 pounds
D 10 pounds
Answers
GPT-4o mini
To find out how much weight Steve lost in 4 weeks using the given regression equation \(y = 1.8x + 1.2\), we can substitute \(x\) with 4:
\[
y = 1.8(4) + 1.2
\]
Calculating that step by step:
1. Calculate \(1.8 \times 4\):
\[
1.8 \times 4 = 7.2
\]
2. Add 1.2 to the result:
\[
7.2 + 1.2 = 8.4
\]
So, the total number of pounds lost by Steve in 4 weeks is \(8.4\) pounds.
The correct response is:
**B 8.4 pounds.**
\[
y = 1.8(4) + 1.2
\]
Calculating that step by step:
1. Calculate \(1.8 \times 4\):
\[
1.8 \times 4 = 7.2
\]
2. Add 1.2 to the result:
\[
7.2 + 1.2 = 8.4
\]
So, the total number of pounds lost by Steve in 4 weeks is \(8.4\) pounds.
The correct response is:
**B 8.4 pounds.**