You have been saving $4.50 per week for the last several weeks. Today you decide to spend $21 which is 1/6 of your savings. How
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ANSWER
EXPLANATION
The given parabola has directrix x=2.
This implies that, the parabola is opens in the direction of the negative x-axis because it must open in a negative direction to the directrix.
The equation of such parabola is of the form:
where (h,k)=(-5,8) is the vertex.
But the parabola opens to the left.
p=-7
The equation now becomes