Math math math math Need asap Showing your work identify the vertex for each equation

1) y =-x^2+2x+1

2) y=-x^2-x

3) y=2x^2+5

Can someone pls ! pls answer all. no explanation needed..

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *