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
Answer: C
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Determine whether the given function is one-to-one. If it is one-to-one, find a formula for the inverse.f(x) = 6x - 7
A. f-1(x) = 
+ 7
B. f-1(x) = 
C. f-1(x) = 
D. Not one-to-one
Find the union or intersection as indicated.Find A ? B if A = {x|x < -3} and B = {x|x ? 5}
A. ? B. {x|-3 < x ? 5} C. {x|x > -3} D. {x|x < -3 ? x ? 5}
Find ? if B = 4?.
?
?
Remember: The sum of the three angles in any triangle is always 180°.
?
A. ? = 72° B. ? = 19° C. ? = 21° D. ? = 18° E. ? = 69°
Evaluate the expression for the given value of x.(-4x)2, x = 4
A. 64 B. -64 C. -256 D. 256