The temperature of an object, initially at 10 C, rises at a rate of 8'C per minute for a time, then drops at a rate of 4 C per minute for half that amount of time. If its final temperature is 60 C, how much time has passed in total? 25 a) x= min 3 25 b) x= min 6 c) x =5 min 25 d) x=- min 2Find 3: and y such that the points 451-1, 3), 30:. 9). and C(5. y) are collinear with point B lying midway between points A and C. a) x = 2, y = 15 1)) X='3, Y='15 c) x = 15, y = 2 d) x = 3. y = 15 Express x in terms of the other variables in the diagram below. a) x= t(r -1) h r b) x = tr h C) x= t( r - h) h X t hr - t2 d) x= t