Solve. Check for extraneous solutions.
- x = 6
A. {-7}
B. {-7, -3}
C. {-3}
D. ?
Answer: C
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Find all the first order partial derivatives for the following function.f(x, y, z) = xz
A. 
= z
; 
= 
; 
= x
B. 
= z
; 
= 
; 
= x
C. 
= z
; 
= - 
; 
= x
D. 
= z
; 
= - 
; 
= x
Solve the problem.A furniture store has an average inventory of 
at retail, and an average inventory of 
at cost. The cost of goods sold for the same period is $26,073.58 and sales of furniture were 
. Find (a) Stock turnover at cost, and (b) stock turnover at retail. Round to the nearest hundredth.
A. (a) 6.90, (b) 6.94 B. (a) 1.44, (b) 1.43 C. (a) 6.94, (b) 6.90 D. (a) 4.83, (b) 9.91
Write the number in scientific notation.5,600,000
A. 5.6 × 106 B. 5.6 × 105 C. 5.6 × 10-6 D. 5.6 × 10-5
A firm purchased a 15-year franchise for a computer outlet store that is expected to generate income at the rate of
?
?
dollars per year. If the prevailing interest rate is 9% per year compounded continuously, find the present value of the franchise.
?
A. $3,264,095 B. $4,938,398 C. $3,619,817 D. $2,240,764 E. $5,973,418