Y’all I REALLY need help so please help a girl out and explain how I need to do this!! Thank you in advance

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

Write the expression 7x^3-28xy^2 as the product of 3 factors

I’m stuck on this equation, anyone got the answer?