Consider the following three systems of linear equations. system a system b system c [a1] [a2] [b1] [b2] [c1] [c2] answer the questions below. for each, choose the transformation and then fill in the blank with the correct number. the arrow means the expression on the left becomes the expression on the right. how do we transform system a into system b? × equation [a1] → equation [b1] × equation [a2] → equation [b2] × equation [a1] + equation [a2] → equation [b2] × equation [a2] + equation [a1] → equation [b1]

What is the slope of the line (-7,2) (4,6)

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school.each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220