If cot 0 = tan 30° what is 0?

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?

One integer is 5 more than another. their product is 104. find the integers

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m