Solve for the indicated variable.S = 2?rh + 2?r2 for h
A. h = 
- 1
B. h = 2?(S - r)
C. h = 
D. h = S - r
Answer: C
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Solve the problem.The spring of a spring balance is 5.0 in. long when there is no weight on the balance, and it is 8.3 in. long with 9.0 lb hung from the balance. How much work is done in stretching it from 5.0 in. to a length of 14.6 in.?
A. 130 in.-lb B. 13 in.-lb C. 260 in.-lb D. 17 in.-lb
Express the vector as a product of its length and direction.
i - 
j + 
k
A. 
B. 
C. 
D. 
Solve the problem.The U.S. Maritime Administration estimated that the cost per ton of building an oil tanker could be represented by the model 
where y is the cost in dollars per ton and x is the tons (in thousands). What size of oil tanker (in thousands of tons) can be built for $200 per ton?
A. 34 thousand tons B. 268 thousand tons C. 340 thousand tons D. 760 thousand tons
The probability distribution of a random variable X is
