b) Sheena read \( \frac{1}{5} \) of a novel on the first day. She read \( \frac{2}{3} \) of the remaining pages on the second day. She finished reading the novel on the third day. How many pages did she read on the third day if the novel had 750 pages?

Question Point U is on line segment \( \overline{T V} \). Given \( T V=7 \) and \( T U=2 \), determine the length \( \overline{U V} \). Answer Attempt 1 out of 2 \( U V=\square \)

4a electronics store has a fixed mark-up of \( 85 \% \). a What would be the selling price of a component with a cost price of \( \$ 13 \cdot 20 \) ? b What would be the cost price of a switch that sells for \( \$ 8 \cdot 65 \) ? c How much profit would be made on a soldering kit that is sold for \( \$ 317 \cdot 95 \) ? d A guitar originally priced at \( \$ 482 \) is discounted by \( 35 \% \). What will be the sale price?

Câu 4. Diện tích của hình chãr nhật có chiều dà̀i 500 m và chiều rộng 300 m theo đơn vị héc-ta là: \( \begin{array}{llll}\text { A. } 1500000 \text { ha } & \text { B. } 15 \text { ha } & \text { C. } 150 \text { ha } & \text { D. } 1500 \text { ha }\end{array} \)

\begin{tabular}{|l|l|}\hline 1.1 & What is Thembi's income for one toy? \\ \hline 1.2 & Derive the formula to calculate Thembi's income. \\ 1.3 & \( \begin{array}{l}\text { How much does Thembi pay towards the fuxed monthly running cost } \\ \text { of her business? }\end{array} \) \\ \hline\end{tabular}

3. Identifique, em cada número complexo \( z=a+b i \), sua parte real \( (a=\operatorname{Re}(z)) \) e sua parte imaginária \( (b=\operatorname{Im}(z)) \) e classifique-os como número real \( (b=0) \), número imaginário puro \( (a=0, b \neq 0) \) ou número imaginário \( (a \neq 0, b \neq 0) \). a) \( z=5+3 i \) b) \( z=-9 i \) c) \( z=7 \)