Which expression is equal to a•a•a•a•b•b

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions