Determine whether the given function is exponential or not. If it is exponential, identify the value of the base a.
A. Exponential; a = 
B. Exponential; a = 
C. Exponential; a = 10
D. Not exponential
Answer: B
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Assuming that the equations define x and y implicitly as differentiable functions 
find the slope of the curve 
at the given value of t.x cos t + x = 2t, y = t sin t + t, t = 
A. 2
B. 
C. 2 + ?
D. 
For the following rational function, identify the coordinates of all removable discontinuities and sketch the graph. Identify all intercepts and find the equations of all asymptotes.f(x) = 
A. removable discontinuity at (-2, 0);
x-intercept: (-2, 0), y-intercept: 
;
asymptotes: x = -5, y = 1
B. removable discontinuities: 
, 
;
x-intercept: (2, 0), y-intercept: 
;
asymptotes: x = 5, y = 1
C. removable discontinuities: 
, (-2, 0);
x-intercept: (-2, 0), y-intercept: 
;
asymptotes: x = 5, y = 1
D. removable discontinuity at 
;
x-intercept: (2, 0), y-intercept: 
;
asymptotes: x = -5, y = 1
Multiply or divide as indicated.
A. 2 B. 2.5317 C. 9.961 D. 9
Find the exact function value if it exists.sec 90°
A. 0
B. Undefined
C. 
D. 1