Free points and first person gets a brainliest! :)

What would the rule be for the reflection of y=-3

What is number 31 as a sum of tens and ones?

Maria has $10,000 to invest in two accounts. he decides to invest one part in an account with 5% interest and the rest in an account with 8% interest. at the end of the year he has earned $702,50 in interest.¿how much did maria invest in the 8% account?