Find the nearest number before and after any real number.

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.