Shirley has a credit card that uses the previous balance method. the opening balance of one of her 30-day billing cycles was $2830, but that was her balance for only the firet 2 days of the billing cycle, because she then paid off her entire balance and didn't make any new purchases. if her credit card's apr is 19%, which of these expressions could be used to calculate the amount shirley was charged in interest for the billing cycle?

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?