Please I need help on this, free brainiest for all correct 3 answers Today, everything at a store is on sale. The store offers a 20% discount.

A: The regular price of a T-shirt is $18. What is the discount price?
B: If the regular price of an item is x dollars, what is the discount price in dollars?
C: The discount price of a hat is $18. What is the regular price?

If the REGULAR price of the t-shirt is $18, the SALE price with a 20% discount is $14.40.

18.00 * .20 = 3.60

18.00 - 3.60 = 14.40

Hope this helps!

Step-by-step explanation:

Given , The regular price of shirt = $18

Since , Today, everything at a store is on sale. The store offers a 20% discount.

i.e. Discount percentage = 20% = 0.20 [ we divide percentage by 100 to convert it into decimal or fraction.]

Now , the discount price = (Discount percentage ) x (regular price )

= (0.20) x ($18)

= $3.6

Hence, the discount price = $3.6

Discounted price of shirt = Regular price - discount price

= $18-$3.6

= $14.4

Thus , Discounted price of shirt = $14.4

C. $22.50

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!

hreryryrranswer:

step-by-step explanation: