If a - 5b - 3 = 8, then the straight line ax + by + c = 0 must pass through the point I) (1, 5)
II) (1, -5)
III) (5, -1)
IV) (-1,5)

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Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

If np3 /nc2 = 6, find the value of n

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?