Add.(-18) + 2 + (-1) + 21

A. 4
B. -4
C. 6
D. 42

Answer: A

Mathematics

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Write the expression as the sum or difference of multiples of logarithms.logb 

A.  logb x + 4 logb y -  logb z
B.  logb x9 + logb y8 - logb z5
C.  logb x - 4 logb x +  logb z
D.  logb x + 8 logb y - 5 logb z

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Write as a decimal number rounded as indicated.; Round to the nearest thousandth.

A. 0.457 B. 0.454 C. 0.455 D. 0.456

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Determine whether the infinite geometric series converges or diverges. If it converges, find its sum.1 -  +  -  + . . .

A. Converges; 
B. Converges; - 
C. Converges; 
D. Diverges

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Find the exact value of the indicated trigonometric function of ?.tan ? = - , 270°< ? < 360°Find cos ?.

A. -15
B.
C. - 
D.

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Mathematics