The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 63 ounces and a standard deviation of 7 ounces. Use the Standard Deviation Rule, also known as the Empirical Rule.

a) 68% of the widget weights lie between
and

b) What percentage of the widget weights lie between 49 and 70 ounces?
%

c) What percentage of the widget weights lie above 42?
%

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Me find the value of x each figure.