What are the coordinatrs of point d in the first quarant abcd is a parallelogram given that a (1,3) b (0,1) c (5,1)

The answer is 5, 4 (In the picture it says 4, 5. It was a typo... just go with 5, 4)

Make sure to remember that the first number is always X and it is horizontal, Y is always the second number and it is vertical.

(x, y)

The discount is 8.70 . you dont tell us the percent of tax added so there is no way to find out, unless i'm not seeing anything. without tax its 37.70

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.