Solve the problem.If $3000 is invested in an account that pays interest compounded continuously, how long will it take to grow to $9000 at 4%?
A. 20.6 yr
B. 27.5 yr
C. 4.4 yr
D. 13.0 yr
Answer: B
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Solve the equation using the multiplication property of equality.
a = 0
A. {10} B. {-10} C. {0} D. {1}
Find a set of parametric equations for the given Cartesian equation.y = 3x2 + 6
A. x = t2; y = 3t + 6; 0 ? t < ?
B. x = t; y = 3t2 + 6; 0 ? t < ?
C. x = 
; y = 3t + 6; t ? 0
D. y = t; x = 3t2 + 6; 0 ? t < ?
Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total cost function is given by 
and the total profit function is given by 
, where x represents the number of boxes of computer chips produced. The total revenue function, R(x), is such that 
. Find R(x).
A. R(x) = 51x - 0.3x2 B. R(x) = 50x - 0.6x2 C. R(x) = 51x + 0.3x2 D. R(x) = 53x - 0.3x2
Solve. Check for extraneous solutions.
+ 
= 4
A. {-3}
B. {3}
C. 
D. ?