Choose the correct answer for each question. 1. Translate the following sentence into an equation. The sum of twice a number \( x \) and 13 is two less than three times \( x \). \( \begin{array}{ll}\text { A } 2(x+13)+3 x-2 & \text { C } 2 x+13=3 x-2 \\ \text { B } 2 x+13=2-3 x & \text { D } 2 x+13=3(x-2)\end{array} \)

\( 5=\frac{3}{25} \) (ii) \( \frac{-7}{30} \times \frac{5}{14} \)

\( 0.005763=5.763 \times 10^{n} \) What number does \( n \) represent?

\( Fe ( s ) + Cl _ { 2 } ( g ) \rightarrow FeCl _ { 3 } ( s ) \)

\( \left. \begin{array} { l } { f ( x ) = 3 x ^ { 3 } - 10 x ^ { 2 } + 7 x + 50 } \\ { g ( x ) = 12 x ^ { 2 } - 14 x + 70 } \\ { f ( x ) + g ( x ) } \\ { f ( x ) - g ( x ) } \\ { f ( x ) = g ( x ) } \end{array} \right. \)

1. Which of the following sets can be described in complete listing, partial listing and/or setbuilder methods? Describe each set by at least one of the three methods. a) The set of the first 10 letters in the English alphabet. b) The set of all countries in the world. c) The set of students of Addis Ababa University in the 2018/2019 academic year. d) The set of positive multiples of 5 . e) The set of all horses with six legs.