PROBLEM SOLVING A book on the care of tropical fish states that the pH level at the water should be
between 8.0 and 8.3 and the temperature at the water
should be between 76°F and 80°F. Let x be the pH
level and y be the temperature. Write and graph
a system of inequalities that describes the proper
pH level and temperature of the water. Compare
this graph with the graph you would obtan if the
temperatures were given in degrees Celsius.

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? )