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GenaCL600 [577]
3 years ago
6

URGENT I NEED AN ANSWER!!! A water tank holds 657 gallons but is leaking at a rate of 4 gallons per week. A second water tank ho

lds 876 gallons but is leaking at a rate of 7 gallons per week. After how many weeks will the amount of water in the two tanks be the same?
Mathematics
1 answer:
DENIUS [597]3 years ago
6 0

Answer: 73 weeks

Step-by-step explanation:

Equations

657-4w=876-7w

Solve for w

w=73

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A kayak rental company charges $25.00 to rent a kayak and $3.50 for each half hour it is used.
pogonyaev

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:

r(t) = 25 + 3.5t ; there r is the total cost of using the kayak and t is the number of half-hours the kayak is used.

4 hours means that there are 8 half-hours. Therefore, t=8. Put t=8 in r(t).

r(8) = 25 + 3.5*(8) = 25 + 28 = 53.

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Let g(x) = 2x and h(x) = x2 + 4. Evaluate (h ∘ g)(1). 2 8 10 4
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You can solve this by plugging 1 into g(x) and plugging the result into h(x).

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