12 n(n + 3) a. find the sum of the series. (round your answer to four decimal places.)

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

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

Construct the graph that models the given situation