Calculate. Show your work! Emmet drove to the candy store to buy mints and chocolates. The mints cost \( \$ 6.84 \) and the chocolates cost \( \$ 7.81 \). He pays with a \( \$ 20 \) bill, how much change does he receive?

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

\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}

1.40 Use metric conversion factors to solve the following problems: a. The Daily Value of phosphorus is 800 mg . How many grams of phospho- rus are recommended? b. A glass of orange juice contains 0.85 dL df juice. How many milliliters of orange juice is that? c. A package of chocolate instant pudding contains 2840 mg of sodium. How many grams of sodium is that?

- Какое из следующих чисел заключено междд числами \( \frac{19}{16} \) и \( \frac{22}{17} \) ? \( \begin{array}{llll}\text { 1) } 1,0 & \text { 2) } 1,1 & \text { 3) } 1,2 & \text { 4) } 1,3\end{array} \)

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