91Ó°ÊÓ

Graph each function. State the domain and range.

$\mathit{f}\mathbf{\left(}\mathbf{x}\mathbf{\right)}\mathbf{=}\mathbf{\left[}\mathbf{2}\mathbf{x}\mathbf{\right]}$

Devonte's scores on his first four Spanish tests are 92, 85, 90, and 92. What test score must Devonte earn on the fifth test so that the mean will be exactly 90?

Determine the domain and range of the function graphed below.

The table below shows the relationship between certain temperatures in degrees Fahrenheit and degrees Celsius. Which of the following linear equations correctly models the relationship?

F$F=\frac{8}{5}C+35$

G$F=\frac{4}{5}C+42$

H$F=\frac{9}{5}C+32$

J$F=\frac{12}{5}C+26$

Jacob formed an advertising company in 1992. Initially, the company only had 14 employees. In 2008, the company had grown to a total of 63 employees. Find the percent of change in the number of employees working at Jacob ‘s company. Round to the nearest tenth of a percent if necessary.