Which of the following reactions occurs at the anode in a voltaic cell? cu2+ (aq) + 2e– → cu (s)
cd2+ (aq) + zn (s) → zn2+ (aq) + cd (s)
k+ (aq) + e– → k (s)
mg (s) → mg2+ + 2e–

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)

Question 4 of 10 2 points what is the second part of the process of investigating a question using data? a. rephrasing the question o b. describing the data c. collecting the data o d. making an inference submit