Write the expression using base e rather than base 10.10x + 9
A. e10(x + 9)
B. 10ex + 9
C. e(ln 10)(x + 9)
D. (x + 9)e10
Answer: C
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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: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 9), (9, 0) symmetry: x-axis, y-axis B. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 0), (0, 9), (9, 0) symmetry: origin C. function domain: {x|-9 ? x ? 9} range: {y|-9 ? y ? 9} intercepts: (-9, 0), (0, -9), (0, 9), (9, 0) symmetry: x-axis, y-axis, origin D. not a function
Simplify.6 ? 7 - 1
A. 36 B. 41 C. 42 D. 43
Find the probability.People were given three choices of soft drinks and asked to choose one favorite. The following table shows the results.
P(person is over 40 ? person drinks diet cola)?
A. 
B. 
C. 
D. 
Solve by addition or substitution.9x + 7y = -364x - 2y = -16
A. (-4, 1) B. (-5, 1) C. (-4, 0) D. ?