Multiply.-10x(-12x - 4)
A. 160x2
B. 120x2 + 40x
C. -12x2 + 40x
D. 120x2 - 4x
Answer: B
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Use the discriminant to determine the number and type of solutions for the equation. If the solution(s) are real, state whether they are rational or irrational.4x2 - 12x + 9 = 0
A. Two irrational solutions B. Two rational solutions C. One rational solution D. Two nonreal complex solutions
Use exponential notation to write the repeated multiplication.5 ? 5 ? 9 ? 9 ? 9 ? 9
A. 52 ? 94 B. 456 C. 5 ? 96 D. 25 ? 49
Perform the operations indicated. Simplify the answer whenever possible. ×
A.
B.
C.
D.
Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function domain: all real numbers range: all real numbers intercepts: (-2, 0), (0, 2), (2, 0) symmetry: none B. function domain: {x|x ? 0} range: {y|y ? -2} intercepts: (-2, 0), (0, 2), (2, 0) symmetry: y-axis C. function domain: {x|x ? -2} range: {y|y ? 0} intercepts: (-2, 0), (0, 2), (2, 0) symmetry: none D. not a function