Solve the problem.The weights (in pounds) of the five books in Lynn's backpack are as follows: 2.8, 3.1, 3.2, 2, 1.2 What is the mean of these weights? Round to the nearest tenth.
A. 2 pounds
B. 3 pounds
C. 2.5 pounds
D. 2.1 pounds
Answer: C
Mathematics
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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
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Solve and graph the inequality. Give answer in interval notation.
- 
? 
+ 2
A. 
B. 
C. 
D. 
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Provide an appropriate response.Explain why the function f(x) = (x + 3)3 - 1 is a one-to-one function.
What will be an ideal response?
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Divide. Round your answer to the nearest hundredth when necessary.0.9375 ÷ 375
A. 0.25 B. 0.0035 C. 0.26 D. 0.0025
Mathematics