11. x+3 72-16

11. x216 12. (4x Problems 13-15, Set up an equation/inequality and solve each of the problems. 13. The ratio of male to female students at the University of Central Florida is 11 to 20. In 2014, there was a total of 51,269 students. Find the number of male and the number of female students. 14. When a hobby rocket is fired from ground level, the distance above the ground can be found by s(t) = 48t 16t2, where tis measured in seconds. During what time interval is the rocket at least 20 feet above the ground? 15. A person's IQ (Intelligence Quotient) can be found using the formula IQ = 100. Divide your mental age M, found by standardized tests, by the chronological age C, and then multiply the ratio by 100. Ifthe IQ range for 16-year-olds is given by 82 IQ 143 , find the mental age range of this group. 16. The temperature for August 14, 2015, in Orlando, FL ranged between 720F and 930F, inclusive. What was the range in Celsius degrees? (F = -C + 32)