Judah deposited $450 into an account that earns simple interest, and after 4 years, the interest in the account was 90$. What was the simple interest rate?

Sasha delivers newspapers to subscribers that live within a 4 block radius of her house. sasha's house is located at point (0, -1). points a, b, c, d, and e represent the houses of some of the subscribers to the newspaper. to which houses does sasha deliver newspapers?