In this particular arithmetic sequence, a7 = 50 and a15 = 114. what is the value of a21? hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference.

Ms. sutton recorded the word counts and scores of the top ten essays in a timed writing contest. the table shows her data. how does the word count of an essay relate to its score in the contest? word count tends to decrease as the score decreases. word count tends to increase as the score decreases. word count tends to remain constant as the score decreases. word count has no apparent relationship to the score of the essay.

15 points ! ~ see if you know the answer to both you!

Find the missing factor. write your answer inexponential form.9^2=9^4×