16) From the statement of the problem, we know that:
• f(x) = 10,
,
• f(x) = x/2 + 8.
Using the data above, we have the following equation for x:
[tex]10=\frac{1}{2}x+8.[/tex]
To find the value of x, we follow the following steps:
[tex]\begin{gathered} 10=\frac{1}{2}x+8, \\ 10-8=\frac{1}{2}x, \\ 2=\frac{1}{2}x, \\ \frac{1}{2}x=2, \\ x=4. \end{gathered}[/tex]
18) From the statement of the problem, we know that:
• f(x) = -1,
,
• f(x) = 4x + 11.
Using the data above, we have the following equation for x:
[tex]-1=4x+11.[/tex]
To find the value of x, we follow the following steps:
[tex]\begin{gathered} -1=4x+11, \\ -1-11=4x, \\ -12=4x, \\ 4x=-12, \\ x=-\frac{12}{4}, \\ x=-3. \end{gathered}[/tex]
Answers
• 16) ,x = 4
,
• 18), x = -3
