ITA240Y1 Final: ITA240Y1 Winter Terms, Exam Notes. Chapter Two, What is Neorealism. April 20th, 2020

Table 4 shows the electricity rates charged by Better ThanLightning Utilities in the winter months. A.) Write a piecewisedefinition of the monthly charge W(x) for a customer who uses x kWhin a winter month. TABLE: 4 Base charge, $8.50 First 500 kWh orless at 0.0500/kWh Over 500 kWh at 0.0.0800/kWh B.) GraphW(x).

write a piecewide definition of the monthy charge W(x)

It says the Answer is 8.50 +0.0500X if 0 less then or equal x lessthen or equal to 500

-6.50 +0.0800x if 500 less then x

I Dont understand how they get the -6.50. Please help me with thisproblem!!

Karina is planning on taking two trips this year. Once during fall break and once during winter break. Her utility is a function of how much she spends on the two trips. Her utility function is given by u(f,w) = f^1/4 x w ^1/2. She has $600 right now and she knows that she will get $400 from selling her books at the end of the semester. She can borrow and lend as much as she wants at an interest rate of 33.333%. How much does she spend on her fall trip?

1. 200

2. 300

3. 400

4. 500