You purchase an item to sell in your store. the item costs you $6.45. you mark the item up 20%, but later run the item on sale at 5% off the marked price. if your customer must pay 6% sales tax, what will be the total amount paid by the customer for the item?

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

i can you with this answer

step-by-step explanation: