What number is equivalent to 6.75×10^-4

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function