0 Question 4 [3 0/1 pt '0 3 23 99 (D Details dr dA Let A be the area of a circle with radius r. If E = 5, find E when r : 2. Question Help: El Video Submit Question 0 Question 5 [3 0/1 pt '0 3 2:3 99 6) Details A company's revenue from selling as units of an item is given as R = 1500.7: 33:2. If sales are increasing at the rate of 30 units per day, how rapidly is revenue increasing (in dollars per day) when 100 units have been sold? dollars per day Question Help: El Video Submit Question 0 Question 6 E 0/1 pt '0 3 8 99 6) Details The altitude of a triangle is increasing at a rate of 1 centimeters/minute while the area of the triangle is increasing at a rate of 1.5 square centimeters/ minute. At what rate is the base of the triangle changing when the altitude is 12 centimeters and the area is 93 square centimeters? Question Help: El Video Submit