Number 45

In Problems 41-48, you need to make some assumptions before you estimate your answer. State your assumptions and then calcu- late the exact answer. 41. How many classrooms would be necessary to hold 1,000,000 inflated balloons? 42. The Genesis space capsule crashed into the Utah desert and Keay Davidson said (in the Chronicle Science Writer), "Shaken NASA officials immediately began the tedious process of recovering the capsule. They hope to salvage the probe's unique scientific data: roughly a billion billion parti- cles from the deep-space 'solar wind." State the number of particles in scientific notation. 43. Approximately how high would a stack of 1 million $1 bills be? (Assume there are 233 new $1 bills per inch.) 44. Estimate how many pennies it would take to make a stack 1 in. high. Approximately how high would a stack of 1 million pennies be? 45. If the U.S. annual production of sugar is 30,000,000 tons, estimate the number of grains of sugar produced in a year in the United States. Use scientific notation. (Note: There are 2,000 lb per ton; assume there are 2,260,000 grains in a pound of sugar.)