(1 point) Let A be the area ofa circle with radius r. If % = 5, find % when r = 1. Answer: (1 point) The altitude (i.e., height) of a triangle is increasing at a rate of 3 cm/minute while the area of the triangle is increasing at a rate of 2 square cm/minute. At what rate is the base of the triangle changing when the altitude is 10.5 centimeters and the area is 88 square centimeters? The base is changing at cm/min. (1 point) Find the slope of the tangent line to the curve defined by 8x4 + 6xy 3y3 2 783 at the point (3, 3). The slope of the curve at the point (3, 3) is