Math

MTH208 Week 4 Individual Textbook Problems knave 459, #20 cypher each(prenominal) carcass by graphing. and To solve computer graphic entirelyy, we need points on a line. We can find these by assigning 3 numbers to x and solve for y and then flock them into the equation each time to bring out that they work. See add-in below for numbers assigned to x which gave us the value for y. Y=X2x + 3y = 5 X | YX | Y 3 | -2 3 | -0.33 0 | 00 | 1.66 -3| 2-3 | 3.66 knave 461, #70 Solve each system by the substitution method. and Plugging in the solutions: Page 461, #92 Investing her bonus. Donna invested her $33,000 bonus and received a come up of $970 in interest after one year. If part of the neologism returned 4% and the remainder 2.25%, then how much did she invest at each rate? Part 1 of the money invested at 4% = x Part 2 of the money invested at 2.25% = y So, $13,000 was invested at 4% and $20,000 was invested at 2.25% Page 471, #52 Solve each system by substitution or addition. 2y x = 3 x = 3y 5 2y-(3y-5)=3 2y-3y+5=3 -y+5=3 -y=3-5 -y=-2 Y=2 So, x=3(2)-5 = x=6-5 = x=1 So, if y=2 and x=1 then 2(2)-1=3 yes 4-1=3. Page 472, #72 Books and magazines.

At Gwens garage sale, all books were one charge, and all magazines were other price. Harriet bought four books and three magazines for $1.45, and June bought two books and five magazines for $1.25. What was the price of a book and what was the price of a magazine. Books = b Magazin es = m Henrietta bought 4b + 3m = 1.45 J! une bought 2b + 5m = 1.25 4b + 3m = 1.45 + -4b - 10m = -2.50 (multiplied by -2 throughout the equation) = 0 7m = -1.05 = m =0.15 If m=0.15 than 2b + 5(0.15) = 1.25 2b + 0.75 = 1.25 2b = 0.50 = b = 0.25 Henrietta bought 4 books for $1.00 and 3 magazines for $0.45 for a total of $1.45 June bought 2 books for...If you want to ingest a full essay, order it on our website: OrderCustomPaper.com

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