The principal said that mr. jones, one of our teachers will be on vacation for a week.
what is the best way to rewrite the bold phrase in the sentence above?

None of the phrases are bolded, so I'm going to rewrite the whole sentence.

The principal said that Mr. Jones, one of our teachers, will be on vacation for a week.

In order to make the sentence grammatically correct, a comma was placed between the words "teachers" and "will".

The best answer is:   [c]:   all academic work .

The slope of a linear equation is equal to the change in the value of the dependent variable divided by the change in the value of the independent variable. in this problem, the dependent variable is the profit while the independent variable is the worker's average pay. if the profit is said to increase by 1500 when worker's average pay decrease by 450, the slope is equal to 1500/(-450)=-3.33