Answer:
<em>Residual value of -0.8 means the actual point is 0.8 units below the best fit line.</em>
Step-by-step explanation:
The difference between the observed value of the dependent variable and the predicted value is called the residual.
Mathematically,

where,
e = residual,
y = observed value,
ŷ = predicted value.
When the residual is negative, the data point is below the graph or best fit line.
Residual value of -0.8 means the actual point is 0.8 units below the best fit line. It also means that the actual value is 0.8 lesser than the predicted value.
Answer:
(2, -2)
Step-by-step explanation:
x = 2
y = -2
The answer is B. <span>$78.20; this is the amount Derek pays for 320 minutes of international calls.
Simply substitute in 320 wherever there is an x and solve. The problem also already told us that x stands for minutes so we know it is 320 minutes.</span>
Answer: 2.06 x 10^3
Move the decimal place until there is only one digit and the rest are bending the decimal. Then multiply the number by 10 to the power of however many times you moved the decimal over.