Write the expression without parentheses.-(-9t - 4r - 8s)
A. 9t + 4r + 8s
B. -9t - 4r - 8s
C. -9t - 4r + 8s
D. 9t + 4r - 8s
Answer: A
Mathematics
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Determine if the series converges or diverges. If the series converges, find its sum.
A. converges; 
+ 
B. converges; 
+ 
C. diverges
D. converges; 
+ 
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Graph the pair of parametric equations with the aid of a graphing calculator.x = cos t + 4 cos 3t, y = 5 cos t - 4 sin 3t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Mathematics
Estimate the difference by rounding each number to the nearest hundred.
A. 2500 B. 2528 C. 2600 D. 3000
Mathematics