A shirt is originally priced at $15.50. The shirt goes on sale for 40% off the original price. How much money, in dollars, does the shirt cost including
9% tax on the sale price?

1/4 because there is 4 grades.

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

boxplot

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.