Select the correct answer from each drop-down menu.
a system of equations and its solution are given below.

system a

x-y=3
-2x+4y= -2
solution: (5,2)

complete the sentences to explain what steps were followed to obtain the system of equations below.

system b
x-y=3
2x=10

to get system b, the ? equation in system a was replaced by the sum of that equation and the ? equation multiplied by ? . the solution to system b ? the same as the solution to system a.

fill in the blank where the question marks are.

He concluded that a heavier object dropped from the same height as a lighter object will land

(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.

There are 1872 steps in a building that has 104 floors. each floor has the same number of steps. a second building has the same number of floors but 2 fewer steps between each floor. how many steps are there between each floor of the second building?