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The elephant population in northwestern Namibia and Etosha National Park can be predicted by the expression 2,649(1.045)b, where b is the number of years since 1995.
What does the value 2,649 represent?
the predicted increase in the number of elephants in the region each year
the predicted number of elephants in the region in 1995
the year when the elephant population is predicted to stop increasing
the percentage the elephant population is predicted to increase each year
The expression 3x2 - 33x- 180 can be factored into the form a(x + b)(x + c), where a, b, and c are constants, to reveal the zeros of the function defined by the expression. What are the zeros of the function defined by 3x2 - 33x- 180?
-15 & 4
-4 & 15
6 & -10
-6 & 10
A ball was thrown upward into the air. The height, in feet, of the ball above the ground t seconds after being thrown can be determined by the expression -16t2 + 40t +3 . What is the meaning of the 3 in the expression?
The ball took 3 seconds to reach its maximum height.
The ball took 3 seconds to reach the ground.
The ball was thrown from a height of 3 feet.
The ball reached a maximum height of 3 feet.
Which is a graph of the solution set of the inequality 3x - 4y < 24 ?
The cost to manufacture x pairs of sunglasses can be represented by a function, C(x). If it costs $398 to manufacture 4 pairs of sunglasses, which of
the following is true?
Select the correct equation.
C(4) = 99.50
C(398) = 4
C(4) = 398
C(99.50) = 1
A scientist is studying wildlife. She estimates the population of bats in her state to be 270,000. She predicts the population to grow at an average annual rate of 2.9 percent.
Using the scientist’s prediction, create an equation that models the population of bats, y, after x years.
y = 270(1.29)x
y = 1.029(270000)x
y = 270000(1.029)x
y = 270000(1 + 2.9)x
In the xy-coordinate plane, the graph of the equation
y = 3x2 - 12x - 36 has zeros at x = a and x = b , where a < b. The graph has a minimum at (c, -48) . What are the values of a, b, and c ?
a = 2, b = 4, c = 2
a = - 2, b = 6 , c = 2
a = - 3, b = 3, c = 0
a = 3, b = 6 , c = 2