Assume that the wavelengths of photosynthetically active radiations (PAR) are uni- formly distributed at integer nanometers in the red spectrum from 675 to 700 nm. a. What are the mean and variance of the wavelength distribution for this radiation?
b. If the wavelenghts are uniformly distributed at integers nanometers from 785 to 100 nanometers how do the mean and variance of the wavelenghts distribution compare to the previous part? Explain.

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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answer: what do you mean