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3) Assume it costs 25 cents to mail a letter weighing one ounce or less

Question : 3) Assume it costs 25 cents to mail a letter weighing one ounce or less : 2151666

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Graph the step function.

1) f(x) = [[x+3]]

A)

B)

C)

D)

2) f(x) = [[x - 3]]

A)

B)

C)

D)

3) Assume it costs 25 cents to mail a letter weighing one ounce or less, and then 20 cents for each additional ounce or fraction of an ounce. Let L(x) be the cost of mailing a letter weighing x ounces. Graph y = L(x). Use the interval (0, 4].

A)

 

B)

C)

D)

Answer the question.

4) The lowest point on the graph of f(x) = |x| + 14 has what coordinates?

A) (0, 0)

B) (0, 14)

C) (14, 14)

D) (14, 0)

5) What is the domain of the square root function, given by f(x) = Öx?

A) [0, ∞)

B) (0, ∞)

C) (-∞, ∞)

D) (-∞, 0]

6) What is the domain of the greatest integer function, given by f(x) = [[x]]?

A) {. . . , -2, -1, 0, 1, 2, . . . }

B) {0, 1, 2, . . . }

C) (-∞, ∞)

D) [0, ∞)

7) What is the only real number not in the domain of f(x) = 1/(x -5)?

A) -5

B) 5

C) x - 5

D) 0

 

Solution
5 (1 Ratings )

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Algebra 7 Months Ago 42 Views
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