As I went to pay for my coffee, I saw a sign saying, “Win free coffee for a year! Choose 4 different digits from 1 to 9 to create a 4-digit passcode. Enter your passcode online and if you match our secret passcode, you’ll win free coffee for a year!” How many different passcodes could I choose?

Please answer step by step. Thank you! Decide the number of possibilities of the given situation: Devin pressed 3 different numerical buttons on his calculator.  With those 3 numbers, how many different numbers could he have entered?

A realtor uses a lock box to store the keys to a house. The access code for the lock box consists of 6 digits. The first cannot be 5 and the last digit must be even. How many different codes are available?

Your new license plate was made just recently with the following format: 3 non-repeating lettersfollowed by 4 numerical digits. How many possible license plates could you have received?

A California license plate has 11​ digit followed by 33​ letters followed by 33​ more digits. How many California license plates are possible? Repeated digits and letters are allowed.

A realtor uses a lockbox to store the keys to a house that is for sale. The access code for the lock box consists of four digits. The first digit cannot be zero and the last digit must be off. How many different codes are available

I need help and answer key for 14 and 15

Three softball teams ordered equipment from the same catalog. The first team spent$285 on 5 shirts, 4 caps, and 8 bats. The second team spent $210 on 12 shirts and6 caps. The third team spent $250 for 7 shirts, 10 caps, and 3 bats. What were thecatalog prices for shirts, caps, and bats?

The library labels each book with a five-digit code to identify the book in their computer system. Each code is 3 digits (0-9) followed by two letters. How many codes are possible?

Ernie wrote 10 checks last month and these were the only transactions for his checking account. According to his check register, his balance is $1884.88, but the bank statement he just received says his balance is $2117.29. If nine of Ernie's 10 checks have cleared, what is the amount of the check that hasn'tyet cleared?