You can solve a system with variables by:
1. Pick any two pairs of equations from the system.
2. Eliminate the same variable from each pair using the Addition/Subtraction method
3. Solve the system of the two new equations using the Addition/Subtraction method
4. Substitute the solution back into one of the original equations and solve for the third variable
5. check by plugging the solution into one of the other three equations
Answer:
A. 
B. 
C. 
D. 
Step-by-step explanation:
A. To solve the first part of the problem we must replace
in the function 
So:

B. In part B we must find the inverse function of 
To find the inverse function do 

Now clear the variable x.

Replace x with y.

Finally

C. Now we take the inverse function found above and replace 

D. Now we substitute
in the original function.

Answer:
81 x y^5
Step-by-step explanation:
Simplify the following:
9×3×3 x y^4 y
3×3 = 9:
9×9 x y^4 y
9 x y^4×9 y = 9×9 x y^(4 + 1):
9×9 x y^(4 + 1)
4 + 1 = 5:
9×9 x y^5
9×9 = 81:
Answer: 81 x y^5
Answer:
$24.50
Step-by-step explanation:
60% of $50= $30
$50-$30= $20
15% of $20= $4.50
$20+$4.50= $24.50