The steps below show the incomplete solution to find the value of x for the equation 5x − 3x + 4 = −4 + 20: step 1: 5x − 3x + 4 = −4 + 20 step 2: 5x − 3x + 4 = 16 step 3: 2x + 4 = 16 which of these is most likely the next step? a 2x=4 b 2x=12 c 2x=20 d 2x=18 explain with steps

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?