A certain arithmetic sequence has this explicit formula for the nth term: an = 11 + (n = 1)(4)
The same sequence has this recursive formula:
an
an-1 +
What number belongs in the blank space in the recursive formula?

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)