7 A rock climber that is 0.74 mile above sea level
2 answers:
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Since, population of species A is represented by :
Let us find the population of species A, at the end of week 1:
i.e., x = 1
i.e.,
i.e.,
i.e.,
Also, since population of species B is represented by :
Let us find the population of species B, at the end of week 1:
i.e., x = 1
i.e.,
i.e.,
i.e.,
Thus, at the end of 1 week, species A and species B will have the same population.
Hence, option D is correct.
Given:
The quadratic equation is:
To find:
The solution for the given equation rounded to 2 decimal places.
Solution:
Quadratic formula: If a quadratic equation is , then:
We have,
Here, . Using the quadratic formula, we get
Now,
And
Therefore, the required solutions are 1.14 and -1.47.