15. the temperature c, in degrees, that is equivalent to a temperature of f degrees fahrenheit is given by graph of this equation shows the temperature in celsius for the corresponding temperatures in fahrenheit. the a. explain how linear equations can be used in temperature conversion. b. explain how could you could use the conversion graph to find the normal body temperature in degrees celsius, which is 98.6°f. 16. peter works part time for 3 hours every day and cindy works part time for 2 hours every day. a. if both of them get $4.50 an hour, write an inequality to compare peter’s and cindy’s earnings. b. what should cindy’s per-hour income be so that she earns at least $14 a day? write an inequality and an explanation of how to solve it. 17. admission prices to cinema i to see a movie are $9.50 for an adult and $6.50 for a child. the admission charge at cinema ii is $8.00 per person regardless of age. a. write an inequality showing that the prices are cheaper at cinema i than at cinema ii. b. if 6 adults and their children go together to see a movie, use the inequality to find how many children must attend for cinema i to be the better deal. 18. on a road in the city of madison, the maximum speed is 45 miles per hour and the minimum speed is 35 miles per hour. let x represents the speed. you can write two inequalities to represent the speed restrictions. the inequalities and can be combined and can be written without using and. a. explain how compound inequalities can be use to describe the speed restrictions on roads. b. include a compound inequality describing a possible age restriction for driving on roads. describe what this represents. (minimum driving age is 16 years, and most drivers stop renewing their licenses by age 100.) 19. a county government says that a safe level of chlorine in a hot tub is within 1.75 ppm of 3.25 ppm. a. write and solve an absolute value inequality to represent this situation. b. a lifeguard measures the chlorine level in the pool and finds it is 1.0 ppm. should he add more chlorine? explain. 20. carmen can buy bottles of paint for $2.00 each and boxes of colored pencils for $3.50 each. she can spend no more than $42 on art supplies. a. write an inequality that shows how many bottles of paint, x, and boxes of colored pencils, y, carmen can buy. b. name three different solutions to the inequality.