Decide on a suitable restriction on the domain so that the function is one-to-one and the range is not changed.f(x) = ?x - 16?
A. (-?, 15)
B. [-16, 16)
C. [16, ?)
D. [-16, ?)
Answer: C
Mathematics
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Find the focus and directrix of the parabola.x2 = -12y
A. (0, -3); x = 3 B. (-3, 0); y = 3 C. (0, -3); y = 3 D. (0, -3); y = -3
Mathematics
Round as indicated.2172 to the nearest hundred
A. 2190 B. 2200 C. 2300 D. 2100
Mathematics
Provide an appropriate response.If f(x) = -x2 - 2x - 6, then f(2) - f(t) =
A. -4t2 - 4t + 6. B. t2 - 2t + 4. C. -t2 + 6t - 2. D. t2 + 2t - 8. E. -t2 - 2t + 4.
Mathematics
Solve the problem.Suppose the sales of a particular brand of appliance satisfy the relationship S(x) = 230x + 1200, where S(x) represents the number of sales in year x, with x = 0 corresponding to 1982. Find the number of sales in 
.
A. 4190 sales B. 8150 sales C. 8380 sales D. 3960 sales
Mathematics