If a1=6 and an=5a{n-1}then find the value of a6

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.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list