1 An archer shoots an arrow into the air such that its height at any time, t, is given by the function h(t) = -16t2 + kt + 3. If the maximum height of the arrow occurs at time t = 4, what is the value of k?

(1) 128     (3) 8
(2) 64       (4) 4

1         2         3         4        

2 The magnitude (R) of an earthquake is related to its intensity (I) by R = log (I/T), where T is the threshold below which the earthquake is not noticed. If the intensity is doubled, its magnitude can be represented by

(1) 2(log I - log T)
(2) log I - log T
(3) 2 log I - log T
(4) log 2 + log I - log T

1         2         3         4        

3 Jacob is solving a quadratic equation. He executes a program on his graphing calculator and sees that the roots are real, rational, and unequal. This information indicates to Jacob that the discriminant is

(1) zero            (3) a perfect square
(2) negative      (4) not a perfect square

1         2         3         4        

4 Camisha is paying a band $330 to play at her graduation party. The amount each member earns, d, varies inversely as the number of members who play, n. The graph of the equation that represents the  relationship between d and n is an example of

(1) a hyperbola       (3) a parabola
(2( a ine                 (4) an ellipse

1         2         3         4        

1         2         3         4