Which of the following is guaranteed by the Intermediate Value Theorem, if f is a continuous function on the closed interval [−13, −5] where f(−13) = 4 and f(−5) = 11? A) f(c) = −7 for at least one c in the open interval (4, 11)
B) f(c) = 7 for at least one c in the open interval (−13, −5)
C) f(c) = −7 for at least one c in the open interval (−13, −5)
D) f(c) = 7 for at least one c in the open interval (4, 11)

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

Find the dimensions of the circle. area = 64π in.² r= in.