Here u go. It says my answer has to be at least 20 words long so I'm just typing for no reason. Lol.
Answer:
Step-by-step explanation:
6x + 3y = 3 simplify by dividing both sides by 3 2x + y = 1
3x - y = 4 the 1st equation has a positive y, the 2nd has a negative y. Use elimination
to reduce them down to a single variable equation:
2x + y = 1
3x - y = 4
________
5x = 5 solve
X = 1 substitute back in to one of the original equations to find y
3x - y = 4
3(1) - y = 4
- y = 1
y = -1 (1,-1)
Hope you can see my workout in the picture I attached below.
f⁻¹(x) =

AND
f⁻¹(19) =
Answer:
4.92+4z
Step-by-step explanation:
The formula for the volume of a cube is

, where s is the side length. Then, just do 9 to the third power, or 9*9*9, which equals 729.