A. Calculate the rate of change for each relationship. What do they mean for each company? Rate of change:

EZ Excavation:

Happy Hauling:

Meaning:

EZ Excavation:

Happy Hauling:

b. Write an equation for each. Use x and y for the variables.

EZ Excavation:

Happy Hauling:

c. How much would each hauling company charge to haul 40 cubic yards of dirt?

EZ Excavation:

Happy Hauling:

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

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?