A circle with a radius of 3 units has its center at the origin. which equation gives any point (x, y) on the circle? A. x+y=9

B. x^2+y^2=3

C. x^2+y^2=9

D. x+y=3

((i really need help asap with this so please answer if you know :^) ))

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.