Which strategy would not correctly solve this story problem?

madison washed dishes twice as long as she vacuumed the floors. she washed her dog for 20 minutes more than she vacuumed. she vacuumed the floors for 40 minutes. how many minutes did madison spend on chores?

a.

work backward. madison worked for 40 min and then worked 40 + 20 min (60). then she worked 2 × 40 min (80). add up 40 + 60 + 80 to get the total time madison worked.

b.
draw a diagram. first draw 4 dots (each dot represents 10) for the time madison vacuumed. draw 2 groups of 4 for the time she washed dishes. draw 4 dots and add 2 more for the time she washed her dog. add up all the dots and multiply by 10 to find the total time spent on chores.

c.

use logical reasoning. madison worked for 1 period of 40 min vacuuming and for 2 periods of 40 min washing dishes. she worked 1 more period of 40 min plus 20 more min. that's 4 × 40 min + 20 min.

d.

translate into an equation. 40 + 40 + 40 + 20 = m

W-16=-12 solve each one step equation plz

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? )

Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 7 5 11 14 which of the following is a scatter diagrams accurately represents the data? what does the scatter diagram developed in part (a) indicate about the relationship between the two variables? try to approximate the relationship betwen x and y by drawing a straight line through the data. which of the following is a scatter diagrams accurately represents the data? develop the estimated regression equation by computing the values of b 0 and b 1 using equations (14.6) and (14.7) (to 1 decimal). = + x use the estimated regression equation to predict the value of y when x = 4 (to 1 decimal). =