The rectangular coordinates of a point are given. Express the point in polar coordinates with 
and 
(0, 
)
A. (7, 90°)
B. (7, 270°)
C. (
, 90°)
D. (
, 270°)
Answer: C
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Use a calculator to evaluate the expression. (Round your answer to three decimal places.)
?
A. 1.523 × 1010 B. 1.523 × 1011 C. 3.222 × 109 D. 3.222 × 1011 E. 3.222 × 1010
Find the vertex of the quadratic equation's graph and determine whether the graph opens up or down.y = -2x2 + 3x - 12
A. 
, down
B. 
, up
C. 
, up
D. 
, down
Determine the sum or difference in the given clock arithmetic.(1 - 6) - 2 (clock 7)
A. 1 B. 5 C. 7 D. 3
Calculate the average rate of change of f on each interval. What happens to this average rate of change as the interval decreases in length?f(x) = -4x2 + 
x4
(i) [1.9, 2.1] (ii) [1.99, 2.01] (iii) [1.999, 2.001]
A. (i) -7.91595; (ii) -7.99919599; (iii) -7.99999200; approaches -8. B. (i) -0.04; (ii) -0.0004; (iii) -0.000004; approaches 0. C. (i) 0.04; (ii) 0.0004; (iii) 0.000004; approaches 0. D. (i) -79.1995; (ii) -799.92; (iii) -7999.992; approaches 0.