PLS HELP ASAP Use a geometric representation to determine the difference of the complex numbers.

z1 = - 2 - 6i
z2 = 5 + 9i

A. z = 7 - 15i
B. z = -7 + 15i
C. z = -7 - 15i
D. z = 7 + 15i

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .