Chris's hike started at an elevation of -12 m. his hike finished at an elevation of 235 m. how much did chris's elevation change? m

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

How many verticies does a triangular prims have