Need help plz, not sure what to do

with a tank of 32 gallons, distance can be travelled = 430 miles

hence, with a tank of 1 gallon, distance can be travelled = (430/32) miles = 13.4375 miles

now,

(a) distance will be covered with 16 gallons of fuel = (13.4375 * 16) miles = 215 miles

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430 miles = 32 gallons

1 mile = 32/430 gallons

and,

(b) for 154 miles = [(32/430) * 154] gallons = 11.460 gallons

= 11.5 gallons (after round off)

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an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7