Find the equation of the parabola whose focus and directrix are shown.
A. (x + 2)2 = -4(y + 7)
B. (y + 2)2 = -4(x + 7)
C. (x + 7)2 = 4(y + 2)
D. (y + 7)2 = 4(x + 2)
Answer: B
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Choose the polar equation that matches the graph.
A. r = sin 6? + sin2 5? B. r = cos 5? + cos2 6? C. r = sin 5? + sin2 6? D. r = cos 6? + cos2 5?
Perform the indicated operations on a calculator. Express the result with the proper accuracy and precision. Assume that all numbers are approximate.
- 0.0756
A. -0.038 B. -0.0383 C. 0.1129 D. 0.11
Use an associative law to find an equivalent expression.8 + (s + t)
A. 8 + (t + s) B. 8(s + t) C. (s + t) + 8 D. (8 + s) + t
Starting in the year 2000, the number of speeding tickets issued each year in Middletown is predicted to grow according to an exponential growth model. During the year 2000, Middletown issued 200 speeding tickets 
Every year thereafter, the number of speeding tickets issued is predicted to grow by 10%.If PN denotes the predicted number of speeding tickets issued during the year 2000 + N, then
A. PN = 200 × (1.1)N-1 B. PN = 200 × (0.1)N-1. C. PN = 200 × (0.1)N. D. PN = 200 × (1.1)N. E. none of these