What is the equivalent ratio for the given ratio 9: 5

Carlos has 4/5 of a tank of fuel in his car. he uses 1/10 of a tank per day. how many days will his fuel last?

Question 14 (1 point) larry deposits $15 a week into a savings account. his balance in his savings account grows by a constant percent rate.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122