On a cold February morning, Colton checked the temperature on his phone and saw that it was -3ºC. When he checked again after school, the temperature had dropped 3°C. What was the temperature after school? To solve the problem, Ellen subtracted -3 - (-3) and came up with an answer of 0°C. Is Ellen correct? Why or why not?​

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

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?

Which of these side lengths could form a triangle a) 2 cm , 2 cm , 4 cm b) 3 cm , 5 cm , 10 cm c) 3 cm , 4 cm , 5 cm d) 4 cm , 8 cm , 15 cm