Vincent is planning to run in a race. he runs 3.5 miles in 25 minutes. at this rate, how much will it take him to run 7 miles?

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?