What is the best estimate for the sum of 5/12 +2/5

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?