Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks. The Dover High School Science Department is purchasing new earth science and physics textbooks this year. Ms. Conley has requested 73 earth science textbooks and 61 physics textbooks for all of her classes, which costs the department a total of $6,227. Mr. Moore has asked for 100 earth science textbooks and 67 physics textbooks, which will cost a total of $7,553. How much do the textbooks cost?

Earth science textbooks cost ___$ apiece and physics textbooks cost ___$ apiece.

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? )