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i don’t know what the answer is to the question can u plz me

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? *

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

The functions f(x) and g(x) are shown in the graph f(x)=x^2 what is g(x) ?