Just the answer of letter D

WPS Office P M 112-Module 3..pdf(Encrypted) _ X + 1 Malat... Go Premium X = Menu v Home Insert Comment Edit Page Protect Tools 2060: Hand Tool To 101.97% - QQ 11/12 A abc Select Tool Edit Text Edit Picture PDF to Office PDF to Picture Annotate 191 0 Rotate Auto Scroll * Read Mode Background * Screen Grab Find Highlight* Note 2. degree 4, x = -1, x = 2, x = i 5. degree 4, x = -3,x = 1+ iv2 3. degree 4, x = 3, x = 2i Quick Task Tools >1 C. Gather information on each polynomial using (a) the rational zeros theorem, (b) testing for 1 and -1, (c) applying Descartes' rule of signs, and (d) using Create PDF the upper and lower bounds property. Respond explicitly to each. 1. f(x) = x4 -2x3 +4x -8. 3. h(x) = x5 - 3x4+3x3 -9x2 - 4x + 12 Edit PDF DE 2. h(x) = x5 + x4 - 3x3+5x+ 2 4. h(x) = 2x4+ 7x2+11x - 20 E Export PDF D. Solve the word problem. Highlight & Markup In a scientific study on the effects of drag against the hull of a sculling boat, some of the factors to consider are the displacements, draft, speed, hull Fill & Sign shape, and length, among others. If the first four are held constant and we assume a flat, calm water surface, length becomes the sole variable (as 3E Combine PDF length changes, we adjust the beam by a uniform scaling to keep a constant displacement). For a fixed sculling speed of 5.5 knots, the relationship between drag and length can be modelled by Print f(x) = -0.4192x4 + 18.9663x3 - 319.9714x2 + 2384.2x - 6615.8, Compress where f(x) is the efficiency rating, (a) under these conditions, what lengths (to the nearest hundredth) will give the boat an average rating? (b) What length will maximize the efficiency of the boat? What is this rating? 11 | Page Vuanno M Vial Callass and Advanced 11/12 > > 1 GE 102% * - O + 23 Type here to search L V7 11:14 pm 65% 9 0 /() ENG 27/12/2020