a pilot is flying a crj-900 from phoenix, arizona, to louisville, kentucky. the aircraft cannot take off or land if the temperature on the field is not within its operating limitations. the aircraft cannot operate if the temperature is at or below −40° f, or at or above 118° f.

part a: write an inequality to represent the temperatures the pilot can take off and land it. part b: describe the graph of the inequality completely from part a. use terms such as open/close circles and shading directions. explain what the solution to the inequality represent. part c: in june 1990, the temperature in phoenix, arizona rose to 122 f. could the pilot have taken off on this day? why or why not?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.