Y’all, I really need some help, i’ve asked about 3 times already but I can’t get any real help/answers so please and thank you. :)

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

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.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?