How does solving for a specific variable in a literal equation compare to solving an equation for the specific value of the unknown ?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.

Which shows how to solve the equation 3/4x=6 for x in one step?