Devora tested two engines. as each engine's rotation got faster, its temperature increased at a constant rate.
the first engine's temperature (in degrees celsius) as a function of its rotation speed (in cycles per second) is
given by the following table of values:
rotation (cycles per second)
temperature (degrees celsius)
26.4
28.8
31.2
the graph of the second engine's temperature (in degrees celsius) as a function of its rotation speed (in cycles
per second) is shown below.
the temperature of which engine increased more for each increase of l cycle per second?
ch

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.