Math 3 standard math junior year, please help me i’d really appreciate it.

Which number produces an irrational number multiplied by 1/3

If f(x)=-3x+2 and g(x)=-7x-2, which point represents f(x)=g(x)?

The distance a bicycle travels with each turn of its wheels is about 3 1/7 times the tire diameter. the tires on mike’s bicycle have a diameter of 24 1/2 inches. how far does it travel with each turn of the wheels?