(x-1)²-25=0 Factor by using the difference between two squares
2 answers:
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Answer:
A. 4/5 of a banana
Step-by-step explanation:
Given that a country produces only apples and bananas.
Moving from point A to point B along its production possibilities frontier, 5 apples are gained and 4 bananas are forgone
i.e. preferences for 5 apples are equal to 4 bananas
5 apples = 4 bananas
Let us calculate unit rate i.e. how much 1 apple is equivalent to. this would give the opportunity cost, namely the cost of gain of 1 apple
1 apple= banana
Hence opportunity cost = 4/5
i.e. Option A is right
Answer:
The equations that represent an exponential decay are;
A; [y = (0.1)ˣ]
B; [y = 2·(0.3)ˣ]
Step-by-step explanation:
An exponential decay is given by the following formula;
y = a·bˣ
Where;
b < 1
For option A, we have; [y = (0.1)ˣ]
Here; a = 1, b = 0.1 < 1, therefore, the function represents an exponential decay
For option B, we have; [y = 2·(0.3)ˣ]
Here; a = 2, b = 0.3 < 1, therefore, the function represents an exponential decay
For option C, we have;
Here; a = 1, b = , therefore, the function does not represent an exponential decay
For option D, we have;
Here; a = 1, b = , therefore, the function does not represent an exponential decay