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Between the years 1960 and 2002, the percent of women in the work force is given by , where x is the number of years past 1950 (Source: U.S. Bureau of Labor Statistics) . Graph this function with a graphing utility and use the graph drawn to estimate the year in which the percent reached 60. Round your answer to the nearest year.
Welded Tuff
A type of rock formed by the compaction and cementation of volcanic ash and debris, heated enough post-deposition to weld together.
Scoria
A dark gray, black, or reddish volcanic rock that contains abundant vesicles, usually having the composition of basalt or andesite; synonymous with volcanic cinders.
Basalt
A dark, fine-grained volcanic rock formed from the rapid cooling of magnesium- and iron-rich lava, characteristic of oceanic crust.
Basaltic Lava
A type of lava that flows from volcanic eruptions, characterized by its low viscosity and high iron and magnesium content.
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