Question

Upon registration, new members of the American cD club receive 30 cDs for review. Each month the club sends its members 2 more cDs for their review. Bobby has purchased every CD sent to him. How many CDs has Bobby purchased during his 9 months of membership?

Answer 1

520 CD's because of the 9 months and we add 30 time 9 we erase the 0 and multiply the 3 with the 9 it will be 27 right we add the zero because the originla number is 30