Can anyone solve this? And I’d appreciate if you explain how to do it.

Find the nonpermissible replacement for binthis expression.b2/5b +5

Which function has the vertex at (2,6)

Aliaa is skating down a ramp. the wheels on her skateboard have diameters of 60 \text{ mm}60 mm60, space, m, m. what is the distance aliaa travels when her skateboard wheels make 202020 revolutions? round your answer to the nearest \text{mm}mmm, m.