The receipt shows the prices of goods that Robert bought at the store. The state Robert lives in has a sales tax rate of 8% on all purchases. How much money does Robert pay in sales tax and what is the total amount he must pay for his purchases?

1.38 sales tax

18.63 total

Step-by-step explanation:

multiple 8% by total,or 0.08 and 17.25 to get 1.38. Add that to total to get 18.63

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1