If anyone can help me that would be great

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.