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2 answers:
Answer:
The answer is C. k = 2.33; he tomatoes cost $2.33 per pound.
Step-by-step explanation:
In this case we have to determine the constant of proportionality of the equation. First we have to identify the variables:
Total charge or price = t
Pounds of tomatoes = p
So the constant of proportionality k is 2.33 because it determines how the total price of a certain number of tomato pounds change. FInally, to calculate the price per pound of tomatoes we have to use the equation a apply it using 1 pound of tomatoes:
So the price of one pound is $2.33.
The answer is C. k = 2.33; he tomatoes cost $2.33 per pound.
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f(x) =
- 2
y =
- 2
This is the original equation, and now we have to find the inverse.
When finding the inverse, just flip the variables, x as y and y as x
f ⁻¹(x)
↓
x =
- 2
We have to isolate y as it is our f ⁻¹(x)
Take 2 to the other side { When you see subtraction, you do addition }
x + 2 =
Take 9 to the other side { When you see division, you do multiplication }
9 ( x + 2 ) = y
9x + 18 = y
f ⁻¹ (x) = 9x + 18
f(x) =
y =
This is the original equation, and now we have to find the inverse.
When finding the inverse, just flip the variables, x as y and y as x
f ⁻¹(x)
↓
x =
We have to isolate y as it is our f ⁻¹(x)
Take 2 to the other side { When you see subtraction, you do addition }
x + 2 =
Take 9 to the other side { When you see division, you do multiplication }
9 ( x + 2 ) = y
9x + 18 = y
f ⁻¹ (x) = 9x + 18