Plant’s height this month: 20cm, plant’s height last month: 15cm what is the percent of increase?

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:

At saturday nights football game there were 18 less fans than half the fans at friday nights game.there were "x" fans at friday's game.write an expression to represent the number of fans at saturday's game. *** urgent***

School x and school y play each other in a competition school x has eight morepoinys than school y. school x has three times as many points as school y. how many points does each school have