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?

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

Can someone me with this problem i don't understand i need

Extremely mega ultra important question! plss answer as fast as you can you will get 84 points! the area of this right triangle is half the area of which of these rectangles?