Solve the problem.Find the equation of the line normal to the curve 
where x = 1.
A. -4e2x + y + 3e2 = 0
B. x + 4e2y - 4e4 - 1 = 0
C. x + 3e2y - 3e4 - 1 = 0
D. -x + 4e2y - 4e4 - 1 = 0
Answer: B
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Solve the system of equations. If there is no solution to the system, give a reason. x + y + z = 10 x - y + 4z = 233x + y + z = 18
A. (5, 1, 4) B. (1, 4, 5) C. (4, 1, 5) D. (5, 4, 1)
Solve the problem.The polynomial 
gives the predicted sales volume of a company, in millions of items, where x is the number of years from now. Determine the predicted sales 16 years from now.
A. 384.28 million B. 280.59 million C. 243.31 million D. 268.24 million
Identify the equation without completing the square.3y2 - 2x + 2y = 0
A. ellipse B. parabola C. hyperbola D. circle
Solve.The space in a landfill decreases with time as given by the function F(t) = 290 - 30 log5 (4t + 1), where t is measured in years. How much space is left when t = 31?
A. 110 B. 380 C. 200 D. 210