Find the valuds to complete the table

Will gve pints stars and brainliest

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

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? *