Encode or decode the given message, as requested, numbering the letters of the alphabet 1 through 26 in their usual order.Use the coding matrix A = 
and its inverse A-1 = 
to decode the cryptogram 
.
A. ACTS
B. ARMS
C. ABLE
D. ALAS
Answer: C
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Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.P(x) = 5x8 + 2x6 + 8x4 + 8x2 + 3
A. 0 positive; 0 or 2 negative B. 0 positive; 0 negative C. 0 or 2 positive; 0 negative D. 4 positive; 0 negative
Find the intervals on which the function is continuous.y = 
- 
A. discontinuous only when x = -10 B. continuous everywhere C. discontinuous only when x = -2 D. discontinuous only when x = -8 or x = -2
Find ? for 0° ? ? < 360°.csc ? = -3.200
A. 198.21°, 341.79° B. 18.21°, 341.79° C. 522.65°, 17.35° D. 198.21°, 288.21°
Factor, if possible.216x12 + 125y9
A. (6x4 + 5y3)(36x8 - 30x4y3 + 25y6) B. (6x4 + 5y3)(36x8 + 30x4y3 + 25y6) C. (6x4 - 5y3)(6x4 + 5y3) D. (6x4 - 5y3)(36x2 + 30x4y3 + 25y6b2)