Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62
B. 0.26
C. 0.22
D. 0.50
Answer: A
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Find the linearization of the function at the given point.
at 
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: {y|y ? 9} intercepts: (0, -2), (8, 0), (0, 4) symmetry: none B. function domain: all real numbers range: {y|y ? 9} intercepts: (-2, 0), (0, 8), (4, 0) symmetry: none C. function domain: {x|x ? 9} range: all real numbers intercepts: (-2, 0), (0, 8), (4, 0) symmetry: y-axis D. not a function
Multiply.8x7 ? 5x8
A. 13x15 B. 40x56 C. 80x15 D. 40x15
Solve by using the square root property.(x + 2)2 = 20
A. x = 2
± 2
B. x = -2 ± 2
C. x = ± 2
D. x = -2 ± 2