Ayúdame por favor puedes responder en inglés help me plz you can answer in enligsh to

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

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?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.