Evaluate. 
A. 
- 
+ C
B. - 
- 8
+ C
C. - 
- 
+ C
D. 
- 8
- C
Answer: B
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Find the length of the curve.x = 
y 3/2 - y 1/2 from x = 1 to x = 4
A. 
B. 5
C. 2
D. 
Calculate the arc length of the indicated portion of the curve r(t).r(t) = (7 + 2t2)i + (2t2 - 5)j + (5 - t2)k, -1 ? t ? 4
A. 51 B. 153 C. 135 D. 45
According to estimates by Paul Kroger Associates, the percent of households that own VCRs is given by 
, where t is measured in years, with t = 0 corresponding to the beginning of 1985.
?
What percent of households owned VCRs at the beginning of 1985? Round your answer to the nearest tenth.
?
__________%
?
At the beginning of 1992? Round your answer to the nearest tenth.
?
__________%
What will be an ideal response?
Write the domain of f in set-builder notation.f(x) = 
A. 
B. 
C. 
D. 