Estimate the absolute standard deviation and the coefficient of variation for the results of the following calculations. Round each result to include only significant figures the numbers in parentheses are absolute standard deviations.
(a) y = 1.02(±0.02) x 10-8 - 3.54(±0.2) x 10-9
(b) y = 0.0040(±0.0005) x 10.28(±0.02) x 347(±1)
(c)

100(1) 2(1) y-