Triangle RST has vertices R(6, 5), S(9, −4), and T(10, 1). Triangle RST has vertices R′(6, −5), S′(9, 4), and T′(10, −1). Which transformation of triangle RST produced triangle RST?

a rotation of 90° clockwise around the origin

a rotation of 90° counterclockwise around the origin

a reflection across the y-axis

a reflection across the x-axis

Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u.s. dollars for every 100 euros. b. gabriella averages 100 u.s. dollars for every 25 euros. c. gabriella can exchange 75 u.s. dollars for 100 euros. d. gabriella can exchange 100 u.s. dollars for 75 euros.