Evaluate the expression x - y for the given values of the variables.x = 20, y = -9
A. -11
B. 11
C. -29
D. 29
Answer: D
Mathematics
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Determine the value or values that are excluded from the following expression.f(x) = 
A. - 
, 0
B. 
, 0
C. - 
D. 
Mathematics
Decide whether the statement translates into an expression or an equation.15 is 10 more than a number.
A. Expression B. Equation
Mathematics
Write the ratio as a fraction in lowest terms.
A. 
B. 
C. 
D. 
Mathematics
Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.f(x) = 8x3 - 4x2 + 6x + 3
A. 0 or 2 positive; 1 negative B. 0 or 1 positive; 0 or 1 negative C. 0 or 1 positive; 2 negative D. 0 positive; 1 or 2 negative
Mathematics