4. [6 points] On September 28, 2012. The Wall Street Journal reported that in the second quarter, the number of cellphone subscribers on contract plans rose just \( 0.7 \% \) from the year before, to 219 million, according to UBS AG. The number of prepaid customers grew about \( 11.7 \% \) to 71 million. a) What percentage of the people using cellphones has prepaid service now? (Leave answer in 2d.p) b) How many subscribers had contract plans in the second quarter of 2011 ("the year before")? c) How many prepaid customers were there in the second quarter of 2011 ? 45|

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?

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

5. El alquiler de mi casa es S/ 1440 . Si equivale al \( 15 \% \) de mi sueldo, ¿cuánto gano?

\( 35 \% \) 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?