There is a sales tax of $6 on an item that casts $88 before tax. the sales tax on a second item is $21 how much does the second item cost before tax

Tax= (6/88)

= (3/44) %

Second item = 21(44/3)

= $308

you can see it this way

3/44 is the ideal fraction to calculate tax. The second item requires you to make 21 the tax instead of 3, which you can easily do by multiplying 3 by 7. When you do the same to the 44, you get the price of the second item before tax, which is $308.

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation: