Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.cos 78°
A. -0.91
B. 0.21
C. 0.16
D. -0.86
Answer: B
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Sketch a continuous curve that has the given characteristics.(a) Defined for all real numbers(b) Increasing for -3 < x < -1 and 2 < x < ?(c) Decreasing for -? < x < -3 and -1 < x < 2(d) Concave upward for -? < x < -2 and 1 < x < ?(e) Concave downward for -2 < x < 1(f) f'(-3) = f'(-1) = f'(2) = 0(g) Inflection point at (-2, 0) and (1, 1) 
What will be an ideal response?
Write the expression in the standard form a + bi.
A. 
+ 
i
B. 
- 
i
C. 
+ 
i
D. 
- 
i
Give the equation of the oblique asymptote, if any, of the function.f(x) = 
A. y = x + 8 B. y = x - 10 C. x = y + 4 D. no oblique asymptote
Give the x-intercepts and y-intercepts of the graph.
A. x-intercept: -7; y-intercept: 6 B. x-intercept: -6; y-intercept: 7 C. x-intercept: 6; y-intercept: -7 D. x-intercept: 7; y-intercept: -6