X pounds of $3
y pounds of $3.25
x+y = 200
300x + 325y = 320*200
300x + 325y = 64000
x+y =200
300x +325y =64000
Solve by eliminating
Multiply top one w/-300
-300y =60000
325y=64000
25y = 4000
y= 160 then
x + 160= 200
x = 40
So the mixture has;
40 pounds of $3 coffee
160 pounds of $3.25 coffee
Answer:

Step-by-step explanation:
There are 4 aces and 4 kings.

Now just subtract that from 1.

Answer:
(2, -3)
Step-by-step explanation:
These are the steps I used:
(6x+2y=6) x3 -> 18x+6y=18
(7x+3y=5) x2 -> 14x+6y=10
When you subtract the equations you get:
4x=8
x=2
Desmos graphing calculator helps, look it up online.(: