Solve the problem.A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the expenditure if the job takes 3 days.
A. $84
B. $4600
C. $46
D. $8400
Answer: D
Mathematics
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Evaluate the integral.
A. 
+ C
B. 
+ C
C. 1
D. 
+ C
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Find the length of the curve r(t) = 2ti+4 costj+4 sintk, 0?t?2?.
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Mathematics
Provide an appropriate response.Solve the equation involving a square: 2a2 - 3= 15
A. x = 3 B. x = ±4.24 C. x = 4.24 D. x = ±3
Mathematics
Translate the verbal phrase into a mathematical expression. Use x to represent the unknown number.A number divided by 78
A. 78 + x
B. 
C. 78x
D. 78 - x
Mathematics