The percentage of adult height attained by a girl who is x years old can be modeled by f ( x ) = 62 + 35 log ( x − 4 ) , where x represents the girl’s age (from 5 to 15) and f(x) represents the percentage of her adult height. Use the function to solve Exercises 113-114. Round answers to the nearest tenth of a percent. Approximately what percentage of her adult height has a girl attained at age ten? The bar graph shows the average number of hours per week that U.S. wives and husbands engaged in housework in six selected years. Use this information to solve Exercises 115-116.
The percentage of adult height attained by a girl who is x years old can be modeled by f ( x ) = 62 + 35 log ( x − 4 ) , where x represents the girl’s age (from 5 to 15) and f(x) represents the percentage of her adult height. Use the function to solve Exercises 113-114. Round answers to the nearest tenth of a percent. Approximately what percentage of her adult height has a girl attained at age ten? The bar graph shows the average number of hours per week that U.S. wives and husbands engaged in housework in six selected years. Use this information to solve Exercises 115-116.
Solution Summary: The author calculates the percentage of adult height attained by a girl at the age of 10 by using the given function f(x)=62+35mathrmlog
The percentage of adult height attained by a girl who is x years old can be modeled by
f
(
x
)
=
62
+
35
log
(
x
−
4
)
,
where x represents the girl’s age (from 5 to 15) and f(x) represents the percentage of her adult height. Use the function to solve Exercises 113-114. Round answers to the nearest tenth of a percent.
Approximately what percentage of her adult height has a girl attained at age ten?
The bar graph shows the average number of hours per week that U.S. wives and husbands engaged in housework in six selected years. Use this information to solve Exercises 115-116.
A population of amoebas in a petri dish will triple in size every hour. At the start of an experiment the population is 800. The function , where x is the number of hours, models the population growth. How many amoebas are in the petri dish after 9 hours?
Part a. write a function P(t) that describes the population after t days of a colony of 1000 fire ants that doubles in population every 13 days
Part b. For the function in part a, solve to find how long it would take for the ant population to reach 10,000
Fill in the table for the exponential function given by f (x) = 3 (2)"
0 1
C
X
-1
f(x) a
a. -8
2
d
type your answer...
b. -4
C. type your answer...
d.
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