A locker has a combination lock that consists of three numbers, and each number in the combination has 10 options (the digits 0 to 9). How many different combinations can be made? (Use ONLY numbers in your answer, no other characters.)

Describe a pattern in each sequence what are the next two terms of each sequence -5, 5, -5, 5 a. subtract 10 from the previous term; -5,5 b. multiply the previous term by 1; 5, 5 c. add 10 to the previous term; -5, -15 d. multiply the previous term by -1; -5, 5