A city has 4 new houses for every 9 old houses. If there are 20 new houses in the city, how many old houses are there?
A. 43
B. 49
C. 45
D. 47

The table respent two linear functions the equation respented by the first tables is given

Mariano delivers newspaper. he always puts 3/4 of his weekly earnings in his savings account and then divides the rest equally into 3 piggy banks for spending at the snack shop, the arcade and the subway

Joyce deposited $5000 in an account with an annual interest rate of 6%, compounded annually. how much money will be in the account 10 years later