USA #3 Mock Test Review

1.) Which expression is equivalent to:

$$8x^2+14x-15$$

2.) The equation for a quadratic function in vertex form can be represented by $$y=a\left(x-h\right)^2+k$$

Which of the following equations isolates the variable 𝒙?

3.) The table of values shows a quadratic function.

5.) A ball is thrown from the top of a building from a height of 𝟏𝟐𝟎 feet above the ground. The height of the ball, 𝑯, in feet from the ground, and time, t, in seconds, can be modeled by the equation:

𝑯 = −𝟏𝟓(𝒙 + 𝟐)(𝒙 − 𝟒).

Select the true statement.

11.) Determine the function, in the form $$y=ab^x$$ , represented by the exponential function in the graph.

12.) Determine the range of an exponential decay function in the form of y=ab^x that has an initial value of 𝟏𝟎 and a decay of 𝟕%.

13.) The graph of a function is shown. What is the equation of the function?

For numbers 14 and 15, a quadratic function with a positive leading coefficient has a vertex at (4, −1) and has zeros at (3, 0) and (5, 0).

14.) Which of the following could represent the quadratic function as a graph?