A rectangular box is to have a square base and a volume of 20 ft3. The material for the base costs 
, the material for the sides costs 
, and the material for the top costs
src="https://sciemce.com/media/3/ppg__cognero__2.3_Functions_and_Mathematical_Models__media__cc37530d-eff9-4ad0-bad6-1fad79c0850d.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_9e0e8a678654426ca025c0b98" />. Letting x denote the length of one side of the base, find a function in the variable x giving the cost of constructing the box.
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What will be an ideal response?
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Mathematics
src="https://sciemce.com/media/3/ppg__cognero__2.3_Functions_and_Mathematical_Models__media__cc37530d-eff9-4ad0-bad6-1fad79c0850d.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_9e0e8a678654426ca025c0b98" />. Letting x denote the length of one side of the base, find a function in the variable x giving the cost of constructing the box.
?
What will be an ideal response?
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Find the work done by F over the curve in the direction of increasing t.F = - 
i + 
j + 
k; C: r(t) = 
i + 
j + 7tk, 0 ? t ? 
A. W = 
+ 
?2
B. W = 
+ 
?2
C. W = 
+ 
?2
D. W = 
+ 
?2
Graph each system of inequalities and shade the portion of the graph represented by the solution set..
A. 
B. 
C. 
D. 
Subtract and simplify.
- 
A. 
B. 
C. 
D. 
Solve for the missing values. Round money to the nearest cent, rate to the nearest tenth of a percent, and time to the nearest day.Principal: $12,847Interest: $1255.26Rate: 
Time: 335 daysMaturity value: 
A. 21%; $14,122.02 B. 10.5%; $14,048.11 C. 10.5%; $14,102.26 D. 11.5%; $14,119.94