Question

need help with part b

0.75/1 points 1 Previcus Answers SCakETB 2.1.001.MSA My Nota This question has several parts that must be completed sequentially, If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part A tank holds 2000 gallons of water, which drains from the bottom of the tank in half an hour. The values in the table show the volume V of water remaining in the tank (in gallons) after t minutes. t (min)5 10 15 20 25 30 V (gal) | 1 368 | 868 | 4901 2201 50 | 0 If P is the point (15, 490) on the graph of V, find the slopes of the secant lines PQ when Q is the point on the graph with the following values (5, 1368) (10, 868) (20, 220) (25, 50 (30, 0) Step Slopes of secant Iines passing through P(15, 490) and Qe, t) can be calculated using mec-1 We begin by calculating the slope when t5 5)-49 msec ”ー5-15 11368-490

Answer 1

and (101 120) ( smaller ) t= Lo 868-4901S 60 10-15 버 201 hence Slape of tangent une at P lIsy90 ( 25.60 + (-su ) 69.80