Which cosine function has a maximum of 4,a minimum of -4 and a period of 2pi/3

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?

Place the following steps in order to complete the square and solve the quadratic equation,

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.