Find f(g(x)) and g(f(x)) and determine whether the pair of functions f and g are inverses of each other.f(x) = 9x and g(x) = 
A. not inverses
B. inverses
Answer: B
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Solve the inequality. Write the solution set in interval notation.x2 + 9x ? 0
A. (-?, -9] ? [0, ?) B. (-?, -9] C. [-9, 0] D. [0, ?)
Give the domain and range of the relation.{(12, 9), (-1, 7), (4, -9), (-7, 8), (-8, -4)}
A. Domain: {-1, -8, -7, 12, 4}; Range: {9, 7, -9, 8, -4} B. Domain: {-1, 9, -8, 7, -7}; Range: {-9, 12, 8, 4, -4} C. Domain: {9, 7, -9, 8, -4}; Range: {-1, -8, -7, 12, 4} D. Domain: {-9, 12, 8, 4, -4}; Range: {-1, 9, -8, 7, -7}
The graph of f(x) = ax2 + bx + c is given in the figure. Determine whether the discriminant is positive, negative, or zero.
A. Positive B. Negative C. Zero
Solve the problem.A computer can do one calculation in 1.4 × 10-7 seconds. Express this quantity in standard notation.
A. .00000014 B. .000000014 C. .000014 D. 14,000,000