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State the domain of the given function. 121) f(x) = 3 x2 + 4x - 3

Question : State the domain of the given function. 121) f(x) = 3 x2 + 4x - 3 : 2139442

State the domain of the given function.

121) f(x) = 3x2 + 4x - 3

A) {x|x is a real number}

B) {x|x > 0}

C) {x|x is a real number and x ≠ 0}

D) {x|x ≥ 0}

122) f(x) =

A) {x|x = 6}

B) {x|x > 6}

C) {x|x is a real number}

D) {x|x is a real number and x ≠ 6}

123) f(x) = 9/8x - 2

A)

B)

C) {x|x is a real number and x ≠ 4}

D) {x|x is a real number}

124) f(x) = ç3x+8 ç.

A) {x|x is a real number}

B) {x|x is a real number and x ≠ - 8/3}

C) {x|x ≥ - 8/3}

D) {x|x ≥ 0}

125) f(x) =

A) {x|x ≥ 6}

B) {x|x ≥ - 6}

C) {x|x > - 6}

D) {x|x is a real number and x ≠ - 6}

126) f(x) =

A) {x|x ≥ 6}

B) {x|x ≤ - 6}

C) {x|x ≥ - 6}

D) {x|x ≤ 6}

127) f(x) =

A) {x|x is a real number and x ≠ -9, x ≠ 9}

B) {x|x is a real number}

C) {x|x ≥ 81}

D) {x|x is a real number and x ≠ 81}

128) f(x) =

A) {x|x <-8 ∪ x > 1}

B) {x|x is a real number and x ≠ -1, x ≠ 8}

C) {x|x is a real number and x ≠ -8, x ≠ 1}

D) {x|x is a real number and x ≠ 8}

129) f(x) =

A) {x|x is a real number and x ≠ -6}

B) {x|x is a real number and x ≠ -18}

C) {x|x is a real number and x ≠ 6}

D) {x|x is a real number}

Solve the problem.

130) Suppose that $2000 is invested at 8% interest, compounded monthly, for t years. The amount A in the account is a function of time. Find an equation for this function and state the domain of the function.

A) A = 2000 , Domain: {t|t is a real number}

B) A = 2000 , Domain: {t|t ≥ 0}

C) A = 2000 , Domain: {t|t ≥ 0}

D) A = 2000 , Domain: {t|t ≥ 0}

Solution
5 (1 Ratings )

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Mathematics 1 Year Ago 212 Views
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