ANSWER
It was given that the parabola has its focus at:
(-10,-7)
and directrix at:
x=16.
We need to determine the vertex of this parabola which is midway between the focus and the directrix.
Therefore the vertex will be at,
The equation of this parabola is of the form:
where p is the distance from the vertex to the focus.
Since the parabola opens towards the negative direction of the x-axis,
We substitute the vertex and the value for p to get;
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1. The length of one side of the park is 60 meters. 3,600 squares is 60.
2. The length of the edge of the container is 20. 8,000 cubed is 20.
3. The area of the base will definitely be greater than one square foot. 1,000 cubed is 10. 10 * 10 is 100. 100 square inches is equivalent to 8 1/3 square feet.
Given:
This year's price - 15,795
Increase in price - 5.5%
We simply multiply the rate of increase to this year's price to get the value of increase.
15,795 x 5.5% = 868.725 rounded up to 868.73
Add the value of increase to this year's price to get next year's price.
15,795 + 868.725 = 16,663.725 rounded up to 16,663.73
We can also solve for next year's price by adding 5.5% to 100% and multiplying its sum to 15,795
15,795 * 105.5% = 16,663.725 rounded up to 16,663.73
C - In any triangle two sides taken together in any manner are greater than the remaining one. So 10+7=17, the greatest length of the 3rd side is 16. 16+17=33