2x+1=5x-20what is the value of x?
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Your pay is described by a piecewise function p(t) where t is hours worked.
The domain of this function is the number of hours you can work in a week—zero to 168. This problem, however, is asking for the domain for a typical 40-hour week. That will be the interval [0, 40].
The domain of this function is the number of hours you can work in a week—zero to 168. This problem, however, is asking for the domain for a typical 40-hour week. That will be the interval [0, 40].
As the directrix is parallel to x-axis, the concavity of the parabola will be in vertical. Then, the general equation is in the form: 
, where 
are the coordinates of the vertice and p is the parameter (distance between the focus and the directrix). The parameter is 
. The vertice is the midpoint between the focus and the projection of the focus in the directrix. Then, the vertice is 
. Hence, the parabola is: 
Now, derivating:
