I got 7 out of 10 questions correct on my math test. What percentage of the test did I get correct?

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

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