Last Saturday an accident caused a traffic jam 13 miles long on a stretch of the interstate.

a. How many vehicles do you think were in the traffic jam if the average car's
length measures approximately 15 feet?

Explain your thinking and show all
calculations.

b. Would there be more or less vehicles if you were told there were a large
number of SUVs and trucks present in this traffic jam?

Explain your thinking and
show all calculations.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

Asporting good store is offering 30 percent off of the original price(x) of football cleats. the discount will be reduced by an another $7 before sales tax.