Provide an appropriate response.Which of these is not a geometric sequence?(a) 1, -3, 9, -27, . . . (b) 1, 2, 4, 7, 11, . . . (c) 4, 
, 
, 
, . . . 
Fill in the blank(s) with the appropriate word(s).
(b) is not
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Use Euler's method to calculate the first three approximations to the given initial value problem for the specified increment size. Round your results to four decimal places.y' = 1 + 
, y(1) = -1, dx = 0.5
A. y1 = -1.5000, y2 = -1.0000, y3 = -0.6500 B. y1 = -2.0000, y2 = -1.2500, y3 = -1.0833 C. y1 = -2.0000, y2 = -1.6667, y3 = -2.1667 D. y1 = -1.0000, y2 = -0.8333, y3 = -0.5417
Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 791. Find a linear function S(t), which fits this data, and which expresses score as a function of time.
A. S(t) = 3.8475t - 495.75 B. S(t) = -4.275t + 491.75 C. S(t) = 3.8475t + 495.75 D. S(t) = 4.275t + 491.75
Evaluate or simplify the given expression.cos(2 sin-1 x)
A. 1 - x2 B. 2x2 + 1 C. 1 - 2x2 D. 1
Explain how to obtain the graph of the second function from the graph of the first function, or state that the graphs are identical.y = cos x, y = -cos(x + 2?)
A. Translate the graph 2? units to the right, and then reflect it over the y-axis. B. Translate the graph 2? units to the right. C. Translate the graph 2? units to the left, and then reflect it over the x-axis. D. The graphs are identical.