Factor (12 – p515 0 (4- rs5}(48 - rs5 - 2310)
O (A - rs5)(48 + rs54 +2510)
O (tº – rs 12)(+18 + rs 1249 +2524)
(A + rs5)(48 – rs5A +2510)

Can someone pls ! pls answer all. no explanation needed..

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?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3