Which of the following equations has a maximum at (9,7)? A. y = -x2 + 14x − 40 B. y = -x2 + 18x − 74 C. y = -x2 − 14x − 58 D. y = -x2 − 18x − 88 WILL MARK BRAINLIEST

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct