Simplify the complex fractions.
A. 
B. - 
C. 
D. 
Answer: D
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Find an equation for the tangent to the curve at the given point.y = x2 - 4, (-4, 12)
A. y = -8x - 40 B. y = -4x - 20 C. y = -8x - 20 D. y = -8x - 36
Solve the problem.A dentist can sell his practice for $1,100,000 cash or for $250,000 plus $270,000 at the end of each year for 4 years. (a) Find the present value of the annuity that is offered if money is worth 8% compounded annually. (b) If she takes the $1,100,000, spends $250,000 of it, and invests the rest in a 4-year annuity at 8% compounded annually, what size annuity payment will she receive at the end of each year? (c) Which is better, taking the $250,000 and the annuity or taking the cash settlement?
A. (a) $894,274.25; (b) $256,632.68; (c) $250,000 plus the annuity has a larger present value than $1,100,000. She should take $250,000 plus the annuity. B. (a) $697,533.91; (b) $255,726.92; (c) $250,000 plus the annuity has a smaller present value than $1,100,000. She should take the $250,000 plus the annuity. She should take the cash settlement. C. (a) $992,644.41; (b) $253,613.48; (c) $250,000 plus the annuity has a larger present value than $1,100,000. She should take $250,000 plus the annuity. D. (a) $581,278.26; (b) $241,234.72; (c) $250,000 plus the annuity has a smaller present value than $1,100,000. She should take the cash settlement.
y?? + 7y? +12y = 6x ?1
What will be an ideal response?
A matrix, A, corresponding to a system of linear equations and the matrix rref(A) obtained after the Gauss-Jordan elimination method is applied to A, are given. Write the system of linear equations corresponding to A, and use rref(A) to give all solutions of the system of linear equations. A = 
; rref(A) = 
A. 
z = any value, y = 5 + 4z, x = 3 - 2z
B. 
z = 0, y = 5, x = -3
C. 
z = any value, y = 5 - 4z, x = -3 + 2z
D. 
z = any value, y = 5 - 4z, x = -3 + 2z