Let
t = time, hours
h = height, feet

At 1 PM, the time and height are respectively
t₁ = 1 hour
h₁ = 4400 feet

At 4 PM, the time and height are respectively
t₂ = 4 hours
h₂ = 5600 feet

By definition, the mean hourly change in elevation is
$\frac{h_{2} - h_{1}}{t_{2} - t_{1}} = \frac{5600-4400}{4-1} = \frac{1200}{3} =400$

Answer: 400 feet per hour

5 0

3 years ago

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Can anyone help me to sove it?

Mumz [18]

Iam not very sure but i think y=22.5

8 0

3 years ago

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For an investment of $26,245, a quarterly statement reports that the account balance is $26,292. The statement also reports that

earnstyle [38]

For an investment of $26,245, a quarterly statement reports that the account balance is $26,292. The statement also reports that for the same quarter, the rate of return on the investment was - 0.02%. Given the information regarding the investment's quarterly activity, is the reported rate of return reasonable? No the rate should be 3.00%

7 0

3 years ago

To determine if 49 is a prime or composite find whether 49 has factors other than 1 and 49

marusya05 [52]

49 has the factor of 7 because 7 times 7 is 49

4 0

3 years ago

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