Jackson digs a hole at a rate of 35 feet every 10 minutes. After digging for 40 minutes, Jackson places a plant in the hole that fills exactly 910 feet of the hole. Relative to ground level, what is the elevation of the hole after placing the plant in the hole? Enter your answer as a mixed number in simplest form by filling in the boxes.

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?