Solve the problem.Tim and Judy mix two kinds of feed for pedigreed dogs. They wish to make 54 pounds of feed worth $0.28 per pound by mixing one kind worth $0.24 per pound with another worth $0.42 per pound. How many pounds of the cheaper kind should they use in the mix?
A. 12 pounds
B. 42 pounds
C. 32 pounds
D. 22 pounds
Answer: B
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Name the property illustrated by the statement.8(x + 9) = 8x + 8 ? 9
A. associative property of addition B. commutative property of addition C. distributive property D. identity element for multiplication
Perform the indicated operation. Write the answer in scientific notation.4,297,175 × 38,862,718 Give the answer to three significant digits.
A. 1.67 × 1014 B. 16.7 × 1013 C. 1.67 × 1015 D. 0.167 × 1015
Round the decimal to the given place value.7.163, nearest hundredth
A. 7.163 B. 7.16 C. 7.17 D. 7.15
Find the critical point(s) of the function. Then use the second derivative test to classify the nature of each point, if possible. Finally, determine the relative extrema of the function.
?
?
A. 
and 
; saddle point: 
; relative maximum value: 
?
B. 
and 
; relative minimum: 
; relative maximum value: 
C. 
and 
; saddle point: 
; relative minimum value: 
?
D. there are no critical points