Objective 1: Graph Exponential Functions For Exercises 9–12, evaluate the functions at the given values of x . Round to 4 decimal places if necessary . g ( x ) = 7 x a. g ( − 2 ) b. g ( 5.9 ) c. g ( 11 ) d. g ( e )
Objective 1: Graph Exponential Functions For Exercises 9–12, evaluate the functions at the given values of x . Round to 4 decimal places if necessary . g ( x ) = 7 x a. g ( − 2 ) b. g ( 5.9 ) c. g ( 11 ) d. g ( e )
Solution Summary: The author calculates the function g(x) = 7x at x=-2.
America is getting older. The graph shows the projected elderly U.S. population for ages 65–84 and for ages 85 and older.The formula E = 5.8√x + 56.4 models the projected number of elderly Americans ages 65–84, E, in millions, x years after 2020.a. Use the formula to find the projected increase in the number of Americans ages 65–84, in millions, from 2030 to 2060. Express this difference in simplified radicalform.b. Use a calculator and write your answer in part (a) to the nearest tenth. Does this rounded decimal overestimate or underestimate the difference in the projected data shown by the bar graph ? By how much?
help !
In Exercises 139–142, determine whether each statement is true
or false. If the statement is false, make the necessary change(s) to
produce a true statement.
log, 8 8
140. log(-100) = -2
139.
log, 4
141. The domain of f(x) = log, x is (-0∞, ∞).
4
142. log, x is the exponent to which b must be raised to obtain x.
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