Example 2 Complete each proof.
17. Given:
8-3x/4=32
Prove: x = -40
Proof:
Reasons
Statements
8 - 3x
a. Given
a.
= 32
b.
?
b.
48 = 34) = 4(32)
C.
?
c. 8 - 3x = 128
d.
d. Subtraction Property
?
e.
?
e. X= -40

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?