The label on the car's antifreeze container claims to protect the car between −30°c and 130°c. to convert celsius temperature to fahrenheit temperature, the formula is:
c = 5/9(f − 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car.

a.) -30> 5/9(f-32)> 130; -22> f> 266

b.) -30< 5/9(f-32)< 130; -22
c.) -30< 5/9(f-32); -22
d.) 5/9(f-32)< 130; f< 266

Which value of c would make he following expression completely factored? 8x+cy

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.

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?