Fill in the blanks to solve 50 x 4

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.

Which number line correctly shows 0.8 + 0.3?

What is the radius of the cone in the diagram? round your answer to the nearest whole number