She needs to earn at least 84 to buy the mp3 player
earnings=earningsperhour times numberofhoursworked
earnings per hour=12 dollars
number of hoursworked=h
therefor
earnings=12 ties h or12h
earnings is at least 84
earnings is greater than or equal to 84
earnings<u>></u>84
12h<u>></u>84
solve
12h<u>></u>84
divide both sides by 12
h<u>></u>7
she needs to work at least 7 hours
to graph, draw a line at x=0 and shade to the right, make the line solid
X^3 - h^3 + 8 because you cube the variables as well as 2, and 2x2x2=8.
Answer:
(3m-1)(m+5)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Data given
n=20 represent the sampel size
represent the sample mean for the independent variable (IQ score of the husband)
represent the sample mean for the dependent variable.
r =0.925 represent the correlation coefficient
Solution to the problem
The general expression for a linear model is given by:
Where 
is the intercept and 
the slope
For this case we have a linear model given by the following expression:
Where -3.34 is the intercept and 1.07 the slope. In order to find the best predicted value when X = 91 we just need to replace into the equation the value of 91 and we got this:
On this case is the best predicted value because 
we have an unbiased estimator.
Answer:
43, it raises by 4 each time. good luck!
Step-by-step explanation:
