-- Slide end-A of the tray, right-side-up, into end-A of the cover. (0 0 0) -- Slide end-A of the tray, right-side-up, into end-B of the cover. (0 0 1) -- Slide end-A of the tray, upside-down, into end-A of the cover. (0 1 0) -- Slide end-A of the tray, upside-down, into end-B of the cover. (0 1 1) -- Slide end-B of the tray, right-side-up, into end-A of the cover. (1 0 0) -- Slide end-B of the tray, right-side-up, into end-B of the cover. (1 0 1) -- Slide end-B of the tray, upside-down, into end-A of the cover. (1 1 0) -- Slide end-B of the tray, upside-down, into end-B of the cover. (1 1 1)
Step-by-step explanation: the answer is 9h+40 because $9/hr rate is dependent on how many hours she worked (h), so it would be multiplied. She earned $40 already, so it would be added. the correct expression would be 9h + 40, or c.
