What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?

If 25% of y is 30, what is 60% of y?

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

Write as a product of two polynomials. 2(3–b)+5(b–3)^2