T=the amount of shirts
12t-20-8t=100
12t-8t=120
4t=120
t=30
So they must sell at least 30 shirts to make $100.
Answer:
10
Step-by-step explanation:
The answer is 10 because there are five stacks of 2 cubes. 5 x 2 = 10.
Answer:
x = 17
Step-by-step explanation:

The unit rate is 21.3333333333333333. So, the printer can print 21.3333333 word doc in 1 sec
21.3333333333333333*855=18240
hope this helps:)
Given:
The system of equations:


To find:
The sum of the x- and y-values in the solution to the system of equations.
Solution:
We have,
...(i)
...(ii)
From (i) and (ii), we get



Multiply both sides by 3.

Divide both sides by 16.


Putting x=4 in (i), we get

The solution of system of equations is (4,12).


Therefore, the sum of the x- and y-values in the solution to the system of equations is 16.