Solve the problem.A company is constructing an open-top, square-based, rectangular metal tank that will have a volume of 
What dimensions yield the minimum surface area? Round to the nearest tenth, if necessary.
A. 5.3 ft by 5.3 ft. by 1.8 ft
B. 3.6 ft by 3.6 ft. by 3.6 ft
C. 9.8 ft by 9.8 ft. by 0.5 ft
D. 4.6 ft by 4.6 ft. by 2.3 ft
Answer: D
Mathematics
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Write the reciprocal of the number.4
A. does not exist
B. 
C. -4
D. - 
Mathematics
Solve the problem.Roberto invested some money at 7%, and then invested $3000 more than twice this amount at 12%. His total annual income from the two investments was $4390. How much was invested at 12%?
A. $9000 B. $26,000 C. $2900 D. $29,000
Mathematics
Evaluate: 
when x = 4 and y = -5
A. 3 B. - 4 C. 4 D. - 3
Mathematics
Find all the zeros of the polynomial function.P(x) = 16x3 - 40x2 + 18x - 4
A. 2
B. 2, 
+ 
i, 
- 
i
C. 2, 
+ 
i
D. 
+ 
i, 
- 
i
Mathematics