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rjkz [21]
3 years ago
11

The height of a soccer ball that is kicked from the ground can

Mathematics
1 answer:
AveGali [126]3 years ago
8 0

Answer:

87.5

Step-by-step explanation:

By completing the square,

y

=-14x^2+70x

=-14(x^2-5x)

=-14(x-5/2)^2+175/2

the max. height=175/2

i.e. 87.5

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3 years ago
A kayak rental company charges $25.00 to rent a kayak and $3.50 for each half hour it is used.
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Answer:

Option D (r(t) = 3.50t +25 ; r(8) = 53)

Step-by-step explanation:

The fixed cost to rent the kayak $25. This is the cost which remains fixed irrespective of the usage of the kayak. The variable cost of using the kayak is the cost which depends on the usage of the kayak. It is mentioned that the kayak is used for 4 hours and the company charges $3.5 for every half hour. The cost function is given by:

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Therefore, Option D is the correct answer!!!

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