(+30 points) Graphs & Functions Discussion A company creates a database for its customers in which each customer is identified by their phone number. In this discussion, explore whether or not this is a function with your classmates. In your first post, address the following:

Assign one variable as the input and the other variable as the output for this scenario. Is this relation a function? Justify your answer using the definition of a function, and explain your reasoning carefully.
Do you think this is a good setup for the company’s database? Describe any pitfalls you see in this setup.
Suggest an alternative identification system for the company’s database.

Write at least 150–300 words.

I'll give an extra 30 points if answered correctly.

Questions 9-10. use the table of educational expenditures to answer the questions. k-12 education expenditures population indiana $9.97 billion 6.6 million illinois $28.54 billion 12.9 million kentucky $6.58 billion 4.4 million michigan $16.85 billion 9.9 million ohio $20.23 billion 11.6million 9. if the amount of k-12 education expenses in indiana were proportional to those in ohio, what would have been the expected value of k-12 expenditures in indiana? (give the answer in billions rounded to the nearest hundredth) 10. use the value of k-12 education expenditures in michigan as a proportion of the population in michigan to estimate what the value of k-12 education expenses would be in illinois. a) find the expected value of k-12 expenditures in illinois if illinois were proportional to michigan. (give the answer in billions rounded to the nearest hundredth) b) how does this compare to the actual value for k-12 expenditures in illinois? (lower, higher, same? )

Xf(x) = 2x + 5 1 7 2 9 3 11 4 13 5 15 6 17 linear functions grow by equal differences over equal intervals. in the table above, what column could be added to prove this relationship?

State the change from the parent function in dotted black to the transformed function in blue. a. the transformed function shifted 2 units down. b. the transformed function shifted 2 units up. c. the transformed function shifted 1 unit to the right. d. the transformed function did not shift.