4. Diketahui \( f(x)=a \), maka \( f(2)=\ldots \) A. \( 2 f(x) \) B. \( 2 a \) C. 2 D. \( f(x) \) E. \( a \)

Which equation illustrates the identity property of multiplication? \( \begin{array}{l}(x+y i) \times z=(x z+y z i) \\ (x+y i) \times 0=0 \\ (x+y i) \times(z+w i)=(z+w i) \times(x+y i) \\ (x+y i) \times 1=(x+y i)\end{array} \)

An angle measures \( 82^{\circ} \) more than the measure of its supplementary angle. What is the measure of each angle? \[ \square^{\circ} \text { and } \square^{\circ} \]

Look at the replacement set below. \[ \{0,4,5,13\} \] Which number from the replacement set is \( a^{\text {don }} \) solution of the inequality \( 8 \geq 5+x \) ? \( \begin{array}{llll}\text { A. } 0 & \text { B. } 4 & \text { C. } 5 & \text { D. } 13\end{array} \)

11. Эгерде \( \left(7^{x}+7^{x}\right)^{3}=56 \) болсо, анда \( x= \) ? А) 1 Б) \( \frac{2}{3} \) В) \( \frac{1}{3} \) Г) \( \frac{1}{6} \) Д) \( \frac{1}{9} \)

10. Jika \( g(x)=x+3 \) dan \( (f \circ g)(x)=x^{2}-4 \), maka \( f(x) \) adalah \( \begin{array}{l}\text { A. } \\ \text { B. } x^{2}-1 \\ \text { C. } x^{2}-6 x-5 \\ \text { D. } x^{2}-6 x+5 \\ \text { E. } x^{2}+6 x+5\end{array} \)