College Algebra: A Graphing Approach - download pdf or read online

By Ron (Ron Larson) Larson, Robert P. Hostetler, Bruce H. Edwards

I bought this as a complement to the Onliine algebra classification i am taking. supplies a few solid principles on use of the graphing calculator.

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X2 ϩ bx Ϫ 12 172. x2 ϩ bx ϩ 24 In Exercises 173–176, find two integer values of c such that the trinomial can be factored. ) 173. 2x 2 ϩ 5x ϩ c 175. 3x 2 Ϫ 10x ϩ c 178. Chemical Reaction The rate of change of an autocatalytic chemical reaction is kQx Ϫ kx 2, where Q is the amount of the original substance, x is the amount of substance formed, and k is a constant of proportionality. Factor the expression. 174. 3x2 Ϫ x ϩ c 176. 2x2 ϩ 9x ϩ c 177. Geometry The cylindrical shell shown in the figure has a volume of V ϭ ␲R 2h Ϫ ␲ r 2h.

359,000,000,000,000,000,000 It is convenient to write such numbers in scientific notation. This notation has the form ± c ϫ 10 n, where 1 ≤ c < 10 and n is an integer. 59 ϫ 1020. The positive exponent 20 indicates that the number is large (10 or more) and that the decimal point has been moved 20 places. A negative exponent indicates that the number is small (less than 1). 0000000000000000000000000009. 28 decimal places Example 4 Scientific Notation a. 5 c. 00000936 b. 82 ϫ 10Ϫ5 d. 361 ϫ 108 Checkpoint Now try Exercise 27.

Geometry A take-out fast food restaurant is constructing an open box made by cutting squares out of the corners of a piece of cardboard that is 18 centimeters by 26 centimeters. The edge of each cut-out square is x inches. Find the volume of the box in terms of x. Find the volume when x ϭ 1, x ϭ 2, and x ϭ 3. 30 40 50 60 Speed (in miles per hour) 156. Engineering A uniformly distributed load is placed on a one-inch-wide steel beam. 71͒2. 93͒ 2. 3 (a) Use the bar graph to estimate the difference in the safe loads for these two beams when the span is 12 feet.

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