APUG: P(1, -3), U(1, 1) and GC-3, 1). A dilation with a scale factor of 2 centered at the origin.

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Is this a polynomial function? i need to know asap