Which expression is equivalent to 7 b + 4 b minus 1 b?
A. 2b
B. 4b
C. 10b
D. 12b

Multiplying an even number of negative numbers gives an answer that is choose from:

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?

Complete the equation of the live through (-1,6) (7,-2)