Determine the type of bias involved. A pool store owner wants to determine the effect of algaecide brands on the treatment of pool water with algae. He contacted 250 customers who had purchased algaecide from him. There were negative responses for Brand C. Both customers who had used brand C reported poor results The type of bias involved in the given information is bias.

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

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? )