Graph the piecewise-defined function.f(x) = 
A. 
B. 
C. 
D. 
Answer: D
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A hemisphere-shaped dome of radius 40 ft is to be coated with a layer of rust-proofer before painting. Use differentials to estimate the amount of rust-proofer needed if the coat is to be 0.04 in. thick.
?
Round the result to the nearest hundredth, if necessary.
?
Hint: The volume of a hemisphere of radius r is 
.
?
__________ ft3
Fill in the blank(s) with the appropriate word(s).
Solve by completing the square to obtain exact solutions.x2 = 7 - 8x
A. -4 ± 2
B. -1 ± 
C. 4 + 
D. -4 ± 
Graph the function.Use the graph of log5x to obtain the graph of f(x) = 2log5x.
A. 
B. 
C. 
D. 
Find the probability of obtaining exactly four threes on six rolls of a fair die. Please round your answer to three decimal places. ? P = __________
Fill in the blank(s) with the appropriate word(s).