XZ=XY+YZ
JL=JK+KL
use the trigonometric values table or unit circle to calculate the expression
Answer:

Step-by-step explanation:
We can find the inverse function of this excercise, isolating X and then changing the variables.


And now we change the variables and we get the inverse function:

Muliply 65 and 0.12 and get 7.8
Subtract 65-7.8 to get marked down price
57.2 is the price after markdown
Carlos is wrong since when subtracted 2175 from 1833 you get 342 so that's about one third of what he said.
To start, you need to subtract 4x from both sides, that way, x is one one sid of the equation.