Evaluate the expression when c=-6 c^2+7c-5
1 answer:
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<h2>In the year 2000, population will be 3,762,979 approximately. Population will double by the year 2033.</h2>
Step-by-step explanation:
Given that the population grows every year at the same rate( 1.8% ), we can model the population similar to a compound Interest problem.
From 1994, every subsequent year the new population is obtained by multiplying the previous years' population by =
.
So, the population in the year t can be given by
Population in the year 2000 = =
Population in year 2000 = 3,762,979
Let us assume population doubles by year .
≈
∴ By 2033, the population doubles.
We claim that the answer is Since the two graphs both open down, and all the answer choices, in addition to the equation of the blue graph, are quadratic polynomials, the leading coefficient must be negative. This immediately rules out answer choices A, B, and C, leaving D as the answer.