What's the answer pls I need help

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? *

Graph the line y=4/3 x+1 . use the line tool and select two points on the line.

What ratio is proportional to 18/21