Answer:
$5466.36
Step-by-step explanation:
This question is pretty cut and dry
just plug in the numbers

If ^means squared and the 3 is multiplying: 19/75
5^-6=25-6=19
5^3=25(3)=75
19/75
Let the number of text messages be represented by X.
Then the total cost of David's cell phone adds up to

Since the total cost of David's phone equals $91.40, we get the following equation.

Subtract 50 on both sides

Divide both sides by 0.45

Therefore David has send 92 text messages.
Answer:
$63.36
Step-by-step explanation:
The home audio system costs $264 wholesale.
The system's price had been increased by 60 percent at the electronics retailer.
Consequently, the increased cost is 60/100x264=$158.40.
The audio system's total cost is now $422.40 (264 + 158.40).
Given that Lori received a commission of = 15% on $422.40, her commission is now (15/100) x 422.40
= $63.36
Answer:
<em>The residual value when x=2 is </em><em>-1</em>
Step-by-step explanation:
The difference between the observed value of the dependent variable and the predicted value is called the residual (e). Every data point has one residual. Lesser the residual value, better the best fit line is.
Mathematically,

Here from the graph,
the observed value is 2, so y=1
the predicted value is 0.5(2)+1 = 1+1 = 2, so 
Putting the values,
