Calculate the slope between the following points ( 1, 6 ) and ( 3, -7 ) ??answer fast plz

If 20% of a number is 35, what is 50% of that number?

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.

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6