Solve the problem.A 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 8 days.
A. $28,000
B. $6700
C. $67
D. $280
Answer: A
Mathematics
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Rewrite the expression as the logarithm of a single quantity.logb x4 - 2logb 
A. 
B. logb (x4 - x)
C. logb x3
D. logb x5
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The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 1/2, y = 9
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics
Factor the expression completely, if possible.4x2 - 169y2
A. (2x + 13y)(2x - 13y) B. (2x + 13)(2x - 13) C. (2x + 13y)2 D. (2x - 13y)2
Mathematics
Round the whole number to the given place value.437,488 to the nearest ten-thousand
A. 437,000 B. 430,000 C. 500,000 D. 440,000
Mathematics