Find the sum of the infinite geometric series, if possible. If it is not possible, explain why. If necessary, round to three decimal places.21 + 7 + 
+ . . .
A. 5.25
B. 15.75
C. The sum does not exist because 
? 1.
D. 31.5
Answer: D
Mathematics
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Find the derivative.s = t7 tan t - 
A. 
= 7t6 sec2 t - 
B. 
= t7 sec2 t + 7t6 tan t - 
C. 
= t7 sec t tan t + 7t6 tan t - 
D. 
= - t7 sec2 t + 7t6 tan t + 
Mathematics
Solve, finding all solutions in [0°, 360°).3 sin2? - sin ? - 4 = 0
A. 90° B. 270° C. 0° D. 180°
Mathematics
Factor completely. If a polynomial cannot be factored, say it is prime.40 + 63x2 - 107x
A. (7x - 8)(9x + 5) B. (7x - 8)(9x - 5) C. (7x + 8)(-9x + 5) D. prime
Mathematics
Graph the function.f(x) = 
x + 2
A. 
B. 
C. 
D. 
Mathematics