Solve the exponential equation. Use a calculator to approximate the solution to the nearest thousandth.2x + 8 = 5
A. x ? -5.678
B. x ? 8.431
C. x ? -0.505
D. x ? 1.334
Answer: A
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To find the number of units that gives break-even for the product, solve the equation R = C. Round your answer to the nearest whole unit.A manufacturer has total revenue given by the function R = 258x and has total cost given by
where x is the number of units produced and sold.
A. 284 units B. 3430 units C. 4198 units D. 232 units
Find an equation of a parabola that satisfies the given conditions.Vertex (9, -8), focus (12, -8)
A. (x - 9) =
B. x - 9 = 3(y + 8)2
C. (y + 8) = 
D. 
(x - 9) = (y + 8)2
Solve the problem.Four boys and three girls are seated in a row, at random, to watch a play. What is the probability thata) a girl is seated at each end of the row?b) one of the boys is seated in the middle seat?c) boys and girls are seated alternately?
A. a) 
b) 
c) 
B. a) 
b) 
c) 
C. a) 
b) 
c) 
D. a) 
b) 
c) 
Find the quotient using long division.
A. 3x2 + 4 + 
B. 3x - 4
C. 3x + 4 + 
D. 3x + 