91Ó°ÊÓ

Graph each linear function. Give the (a) \(x\) -intercept, (b) \(y\) -intercept. (c) domain, (d) range, and (e) slope of the line. $$f(x)=-x+4$$

Using interval notation, write each set. Then graph it on a number line. $$\\{x | x \geq-3\\}$$

Work Exercises \(1-6\) without pencil and paper. Do not use a calculator. Suppose two acid solutions are mixed. One is \(26 \%\) acid and the other is \(32 \%\) acid. Which one of the following concentrations cannot possibly be the concentration of the mixture? C. \(30 \%\) B. \(28 \%\) D. \(31 \%\) A. \(36 \%\)

Using interval notation, write each set. Then graph it on a number line. $$\\{x | x<0\\}$$

Find the zero of the finction \(f\). Do not use a calculator. $$f(x)=5 x$$

Graph each linear function. Give the (a) \(x\) -intercept, (b) \(y\) -intercept. (c) domain, (d) range, and (e) slope of the line. $$f(x)=3 x-6$$

For each set, list all elements that belong to the (a) natural numbers, (b) whole numbers, (c) integers. (d) rational numbers, (e) irrational numbers, and (f) real numbers. $$\left\\{-\sqrt{100},-\frac{13}{6},-1,5.23,9 . \overline{14}, 3.14, \frac{22}{7}\right\\}$$

Write the slope-intercept form of the line that passes through the given point with slope \(m .\) $$\text { Through }(-5,4), m=1.5$$

Work Exercises \(1-6\) without pencil and paper. Do not use a calculator. Suppose that a computer that originally sold for \(x\) dollars has been discounted \(30 \% .\) Which one of the following expressions does not represent the sale price of the computer? A. \(x-0.30 x\) B. \(0.70 x\) D. \(x-0.30\) C. \(\frac{7}{10} x\)

Find the zero of the function \(f .\) Do not use a calculator. \(f(x)=-2 x\)