Which power raised to a power expressions are equivalent to 812? Check all that apply.
(8-3)-4
(8-2)6
(80)12
(81)12
(84)8
(86)2

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.

Measures of the angle of r, 31 s (x+4) t (3x+9)

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).