Answer:
8
Step-by-step explanation:
The attached graph shows the inverse function (red) and the value of the inverse function for an input of -9.

_____
The inverse function tells you the input required for the given output from the function. So, you can look for an output of -9 on the graph of <em>f</em> and see what input gives that. You find ...
f(8) = -9
so ...
f⁻¹(-9) = 8
If you mean $11 & 791 cents, then it would be $18 & 91 cents
Answer:
Hardness.
Step-by-step explanation:
A mineral's hardness is a measure of its relative resistance to scratching, measured by scratching the mineral against another substance of known hardness on the Mohs Hardness Scale.
Answer:
1
Step-by-step explanation:
(2-0) / (6-4)
2/2
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