2 f(x)=x2 + 2x cómo se evalúa?

a) f(3)
b) f(-1)
c) f(x-3)​

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?

The tile along the edge of a triangular community pool needs to be replaced? ?