Evaluate the algebraic expression for the given value or values of the variable(s).6(x + 9) + 21;
x = -19
A. -39
B. -153
C. 39
D. 195
Answer: A
Mathematics
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Determine the vertex of the graph of the parabola.y = x2 + 2x - 3
A. (- 1, 4) B. (- 1, - 4) C. (1, - 4) D. (1, 4)
Mathematics
Answer the question about the given function.Given the function f(x) = 
, list the y-intercept, if there is one, of the graph of f.
A. (0, -2)
B. (0, 
)
C. (0, -9)
D. (
, 0)
Mathematics
Solve the equation by completing the square.2x2 - 7 = 5x
A. 
, -1
B. 
, 1
C. 
, -1
D. 
, 0
Mathematics
Simplify by combining like terms. Write the final answer with descending powers.4x + 7+ 8x + 3
A. 12x + 10 B. 22x C. 12x2 + 10 D. 12x
Mathematics