Will give brainliest!

1.Explain two ways to calculate the total cost of an item if you know the sales tax rate and the item's cost.

2.Write the two multiplication equations that can be formed using your unit rates above. Tell when you would choose to use one over the other and why.

3.Make a table of 4 additional speeds equivalent to 50 miles per hour.

4.Write the three forms of the distance formula.

1. All you have to do is multiply the amount of your item or total of items by the sales. 2. To convert a percent to a decimal, you just need to move the decimal over two places. 3. You don't need to know this to calculate sales tax but it might help you to . 4.  6% tells us that we need to multiply our item price by 6 pieces of a hundred .  Hope this help you that's all I know

Step-by-step explanation:

there are lots of ways.   pick's theorem tells us if the vertices are lattice points the area a is

a = b/2 + i - 1

where b is the number of boundary lattice points and i is the number of interior lattice points.

in the figure i count b=16, i=50 so

a = 8 + 50 - 1 = 57

let's try the shoelace formula.   the area is half the sum of the cross products of the sides.  

a(-2,6)   -2(2)-6(-5) = 26

b(-5,2)   -5(-3) - 2(-2) = 19

c(-2,-3) -2(-3) - (-3)(4) = 18

d(4,-3)   4(3) - (-3)(5) = 27

e(5,3)   5(3) - 3(1) = 12

f(1,3)     1(6) - 3(-2) = 12

a(-2,6)

each of the cross products is twice the area of the triangle with the associated side and one vertex the origin. so the area of abo=26/2=13.

area = (1/2) (26 + 19 +   18 + 27 + 12 + 12) = 57

that checks!