A diary costs $5.50 plus sales tax. After sales tax the diary is
$5.94. What is the sales tax
rate?
a. 6%
b. 8%
c. 7%
d. 9%

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?