Translate to an algebraic expression.Alan weighs 4 times as much as his son. Let x represent Alan's weight. Write an expression for the weight of Alan's son.
A. 4x
B. 
C. x - 4
D. 
x
Answer: D
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Solve the system. If the system has infinitely many solutions, write the solution set with x arbitrary. x + y - 2z - 8 = 03x + z + 6 = 02x - y + 3z + 14 = 0
A. {(x, 7x + 4, -3x - 6)} B. {(x, 7x - 4, -3x - 6)} C. {(x, -7x + 4, -3x - 6)} D. {(x, -7x - 4, -3x - 6)}
Find the standard equation of a parabola with the given focus or directrix. Assume that the vertex is at the origin.Focus at (
, 0)
A. y2 = 
x
B. y2 = 4
x
C. x2 = 20y
D. x2 = 4
y
Provide an appropriate response.Determine the type of polynomial, according to the number of terms: 
A. trinomial B. binomial C. monomial D. none of the above
Use the information in the table to solve the problem. Write your answer as a fraction in lowest terms.The table below shows the amounts of pollutants (in parts per million) in a sample of rainwater.
Find the ratio of pollutant E to pollutant C.
A. 
B. 
C. 
D. 