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2. What is the range of f(x) = -x^2 + 4, if the domain is {2,0,1}? A) {0,4,3}     ...

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caveman111 | (Level 2) Honors

Posted April 19, 2013 at 3:34 AM via web

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2. What is the range of f(x) = -x^2 + 4, if the domain is {2,0,1}?
A) {0,4,3}      B) {0,4,5}   C) {8,4,3}   D) {8,4,5}


5. What is the domain of the function f(x) = (x + 3)^2?
A) all integers  B) all real numbers

C) all integers greater than zero  D) all real numbers greater than zero

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durbanville | High School Teacher | (Level 1) Educator Emeritus

Posted April 19, 2013 at 4:40 AM (Answer #2)

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Please note the answer to Q1. is C. (95 degrees)

The angles of a quadrilateral = 360 degrees

`therefore 80 + 100 + 85 + ...= 360`

`therefore` remaining angle = `360 -(265)`

Please remember to always post individual questions separately in terms of eNotes rules.

`therefore` The remaining angle is C.95 degrees

Sources:

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pramodpandey | College Teacher | (Level 3) Valedictorian

Posted April 19, 2013 at 4:50 AM (Answer #3)

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Q.2  What is the range of f(x) = -x^2 + 4, if the domain is {2,0,1}?

f(2)= 0

f(0)= 4

f(1)= 3

Ans. A

Q.5 What is the domain of the function f(x) = (x + 3)^2?

Domain is all real number.

f(x)- is defined for every value of real numbers.

Range={0,3,4}

Ans. B

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pramodpandey | College Teacher | (Level 3) Valedictorian

Posted April 19, 2013 at 4:09 AM (Answer #1)

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 Q1. Sum of all angles of quadrilateral =360

Sum of three angles=80+100+80

                            =260

Fourth angle= sum of four angles - sum of three angles

                  =360- 260

                  =100

Ans. D

Q.2  What is the range of f(x) = -x^2 + 4, if the domain is {2,0,1}?

f(2)= 0

f(0)= 4

f(1)= 3

Ans. A

Q.5 What is the domain of the function f(x) = (x + 3)^2?

Domain is all real number.

f(x)- is defined for every value of real numbers.

Range={0,3,4}

Ans. B

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