If you specify a negative scale, Oracle Database rounds the actual data to the specified number of places to the left of the decimal point. For example, specifying (7,-2) means Oracle Database rounds to the nearest hundredths, as shown in Table 26-1.
McCann (2000) found that households in communities with good transit use save an average of about $3,000 annually on transportation costs. Litman (2004) found annual transportation cost savings of about $1,300 per household in cities with well-established rail transit systems compared with cities that lack rail.
Following two rounds of cuts in Chicago, the average cost of an Uber trip fell from $14.25 in December 2013 to just $11 in 2014 â a decline of nearly 23 percent.hile Uber doesnât provide data on average miles driven per hour, we can make a few educated guesses based on the information provided. The US government has deemed the average cost of operating a vehicle to be $0.56 per mile, $0.235 of which are variable costs based on mileage.