Determine whether the function is invertible. If it is, find the inverse.{(-7, -3), (-6, -3), (-5, 7), (-4, 3)}
A. {(-3, -7), (3, 7), (-5, -6)}
B. {(-3, -7), (-6, 7), (-5, 3)}
C. {(-7, 3), (-7, 7), (-5, -6)}
D. Not invertible
Answer: D
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Find the indicated probability.The following table contains data from a study of two airlines which fly to Small Town, USA.
If one of the 87 flights is randomly selected, find the probability that the flight selected arrived on time given that it was an Upstate Airlines flight.
A. 
B. 
C. 
D. None of the above is correct.
Solve the problem.The bar graph shows the number of fatal vehicle crashes per 100 million miles driven for drivers of various age groups. 
The number of fatal vehicle crashes per 100 million miles, N, for drivers of age x can be modeled by the formula N = 0.012x2 - 1.18x + 31.25.Using the formula, what age group(s) are expected to be involved in 9 fatal crashes per 100 million miles driven? Use a calculator and round to the nearest year. How well does the formula model the trend in the actual data shown in the bar graph?
A. 25 year-olds and 73 year-olds; The formula does not accurately model the data for ages expected to be involved in 9 fatal crashes per 100 million miles driven. B. 57 year-olds; The formula models the trend in the data reasonably well. C. 13 year-olds and 85 year-olds; The formula models the trend in the data reasonably well. D. 41 year-olds; The formula does not accurately model the data for ages expected to be involved in 9 fatal crashes per 100 million miles driven.
A standard deck of cards contains 52 cards. There are 13 cards of each of the four suits: clubs, diamonds, hearts, and spades. In each suit, there is one card of each of the following: 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king, and ace.One card is dealt from a standard deck. Find the probability of being dealt a queen or a 8.
A. 9
B. 
C. 
D. 
Solve the application.The resevoir at the top of a water tower has the shape of a sphere with a radius of 10.1 meters. How many cubic meters of water can the reservoir hold? Use 3.14 for ? to approximate the answer to two decimal places if necessary.
A. 320.31 ft3 B. 427.08 ft3 C. 4313.53 ft3 D. 3235.15 ft3