Solve the problem.The function f(x) = |x|- 5 is not one-to-one.(a) Find a suitable restriction on the domain of f so that the new function that results is one-to-one.(b) Find the inverse of f.
What will be an ideal response?
(a) x ? 0 is one correct answer; another equally correct answer is x ? 0.
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A radioactive substance is decaying at a constant yearly percentage rate of 6%. The initial amount is 444 grams. How much will remain after 13 years? Round your answer to two decimal places if necessary. ?
A. 100.68 grams B. 198.63 grams C. 199.7 grams D. 97.68 grams
The rectangular coordinates of a point are given. Express the point in polar coordinates with and
(
, -
)
A. (, 315°)
B. (, 135°)
C. (, 225°)
D. (6, 225°)
Translate the statement into a mathematical expression.An employee's salary, s, is increased by $290.
A. 290 B. s + 290 C. s - 290 D. 290s
Determine the degree of the polynomial.-2x2 + 5x3 + 6x4 + 1
A. 9 B. 4 C. 2 D. 10