23-27.The following are the ages of the first 10 students who enrolled in a certain college 23,21,18,17,19,21,18,19,2423.what is the mean?A.19 B.20 C.21 D.2224.What is the range?A.7 B.8 C.9 D.1026.what is/are the model/s?A.16 B.18 and 19 C.19 and 21 D.18,19 and 21.27.The mode of the data isA. unimodal B. bimodal C. trimodal D. multimodal28.The measure of variability is the least because it can be easily affected by outliners?A. range B. mean deviation C variance D. Standard deviation29.Range, standard deviation, and variance are similar in the each looks atA. the different between high and low scores. B.how spread out the data isC. the collection to be sampled. D.the numerical value thet occurs most often.30.it is the difference between the highest and lowest values. A.variance B. Standard Deviation C. range D. mean deviation. Pa help pi.

For problems 7–10, state a reasonable domain for the problem statement, find the inverse function f –1(x), and identify the independent and dependent quantities of the inverse. 7. gary is jogging. the total distance he has traveled, in miles, can be estimated using the function f(x) = 9x, where x is his jogging time in hours. 8. camryn sells computers. she earns commission for her computer sales plus a fixed wage for each day she works. her daily earnings, in dollars, can be estimated using the function f(x) = 0.15x + 50, where x represents her computer sales in dollars. 9. the distance a motorboat travels, in meters, can be estimated using the equation f(x) = 1.9x2, wherexisthetimeinseconds,for0≤x≤10. 10. a rock band is selling tickets to a concert at a theater. the band earns money for each ticket sold, but has to pay some of the earnings to the theater. the total money earned by the band can be estimated using the function f(x) = 7.5x – 300, where x is the number of tickets sold.