Carrie buys 4.16 pounds of apples for $5.20
2 answers:
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Solve both equations for y:
Set the expressions equal to each other:
So, for every nonzero number a the system of equations has one solution.
Set the expressions equal to each other:
So, for every nonzero number a the system of equations has one solution.
Answer:
B. f -1(x) = x + 2 / 5
Step-by-step explanation:
To find the inverse of a function we need to interchange x and y an solve for y.
Since , then
Add 2 to both sides
Divide both sides by 5
We can conclude that the correct answer is B. f -1(x) = x + 2 / 5
1) rearrange one of the formulas so one of the variables is by itself
2) in the other equation replace the variable you solved for with the rearranged equation
3) distribute the 2
4) distrubute the negative
5) combine like terms
6-7) begin to solve for x
8) plug in the value solved for x in the other equation
9-11) solve for y
Final Answers:
x=5/7 y=4
