Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the leading coefficient a of x2 should be positive or negative.The amount of water in a pool as it is being filled, as a function of time.
A. quadratic; negative
B. linear; positive
C. linear; negative
D. quadratic; positive
Answer: B
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Solve the problem.Use the following information to graph the function f over the closed interval [-5, 6].i) The graph of f is made of closed line segments joined end to end.ii) The graph starts at the point (-5, 1).iii) The derivative of f is the step function in the figure shown here.
A. 
B. 
C. 
D. 
Find the indicated term of the geometric sequence.6th term of -1, 3, -9, ...
A. a6 = 729 B. a6 = -729 C. a6 = 243 D. a6 = -243
Write an equivalent expression in exponential form.log
128 = 14
A. 27 = 128 B. 1287 = 2 C. 2128 = 7 D. 72 = 128
Solve the rational inequality. Express your solution on a number line using interval notation.
? 0
A. (-?, -3] ? (1, ?)
B. (1, 3)
C. [-3, 3)
D. [-3, 1)