I probably have this totally wrong but -10?
The equation of the line passing throught the points
and
has a form

Now the equation of the line passing through points (0, 3) and (−5, 2.5) is

Simplify it:

This equation is in slope-intercept form.
Answer: y=0.1x+3.
Answer:
<em>The sound level would be at 80 decibels at 1 or 7 number of measures played</em>
Step-by-step explanation:
<u>Equations with Absolute Values</u>
We have the function s to represent the sound level in decibels:

Where x is the number of measures of the music played.
We are required to find the value of x that makes s=80 decibels. We have to find the equation:

Subtracting 50:


Dividing by 10:


For the absolute value be equal to 3, its argument could be positive or negative:

Or

This leads us to two solutions:

x=7
Or


x=1
The sound level would be at 80 decibels at 1 or 7 number of measures played
Answer:
1. 1
2. 5
3. lost 0.8 pounds
Step-by-step explanation:
The least value (or the most she lost) is in week 1
The greatest value (or the most she gained) is in week 5
When you add all the values together, you get:
-4.1 (lost)
3.3 (gained)
3.3 - 4.1 = -0.8
She lost a total of 0.8 pounds
These are your answers
Hope this helps!