Which is true by CPCTC? ill mark brainliest and i NEED an answer in 10 min

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

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation