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Chapter 7: Problem 43
Evaluate each function at the given value of the variable. \(f(x)=2 x^{2}+3 x-1\) a. \(f(3)\) b. \(f(-4)\)
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Graph each linear inequality. \(x-y \leq 1\)
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 37-38. a. According to the model, what percentage of her adult height has a girl attained at age 13 ? Use a calculator with a LOG key and round to the nearest tenth of a percent. b. Why was a logarithmic function used to model the percentage of adult height attained by a girl from ages 5 to 15 , inclusive?
Graph each linear inequality. \(y>-2\)
Graph each linear inequality. \(3 x-y \geq 6\)
Use a table of coordinates to graph each exponential function. Begin by selecting \(-2,-1,0,1\), and 2 for \(x\). \(y=2^{x-1}\)
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