7. Bir öğrencinin zihninden yaptığı işlem aşağı- da gösterilmiştir. \[ \begin{aligned} 26+4=30 \\ 30+17=47 \\ 47-4=43\end{aligned} \] Bu öğrencinin yaptığı işlem aşağıdakiler- den hangisidir? \( \begin{array}{ll}\text { A) } 26+47 & \text { B) } 47+30 \\ \text { C) } 30+13 & \text { D) } 26+17\end{array} \)

\( 35 \% \) of the seats in a bus are occupied. There are a total of 400 seats. How many seats are not occupied?

There are 250 people in a hall. \( 30 \% \) of them wear glasses. How many people do 1ot wear glasses?

Ms. Ford ordered 5 boxes of origami paper on Amazon that each contains 7 packs of ch pack has 15 pieces of paper. How many total pieces of paper does she have?

\begin{tabular}{|l}\hline Concept 3.14 - More Arithmetic with Complex Numbers \\ 1. Select all expressions that are equivalent to \( 8+16 i \) \\ a. \( 2(4+8 i) \) \\ b. \( 2 i(8-4 i) \) \\ c. \( 4(2 i-4) \) \\ d. \( 4 i(4-2 i) \) \\ e. \( -2 i(-8-4 i) \)\end{tabular}

\( \frac { 30 } { 7 } \div \frac { 10 } { 56 } = \frac { 24 } { \cdots } \)