Core-Plus Mathematics - Contemporary Mathematics in Context, by McGraw-Hill Education

By McGraw-Hill Education

The nation's first selection for an NSF reform highschool arithmetic sequence! This second version incorporates a colourful lesson layout; past improvement of algebraic subject matters; elevated use of know-how; pre-requisite talents assessment in each lesson; Unit source Masters; and a full-volume scholar variation on hand in print, CD-ROM, and on-line codecs.

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3x × 34 = 311 c. 50 = x 5 e. _3 = 5(7x) b. 57 × 53 = 5x d. √5 = 5x 7 23 Solve each of the following equations for x. a. 3x - 8 = 29 c. 3(x - 8) + 17 = 29 24 b. 3(x - 8) = 29 d. 7x + 12 = 3x - 8 Find equations for the lines that contain these pairs of points. a. (0, 0) and (2, 6) c. (1, 2) and (7, 11) 25 b. (0, 0) and (5, 8) Use what you know about exponents and radicals to write each of the following function rules in equivalent form, y = kxr. a. y = _4x 4 c. y = _ b. y = -7 √x 5 d. y = _ x3 √x e.

Write an algebraic rule that shows how pond fish load L depends on the number f of full-size fantail goldfish and the number c of full-size common goldfish in the pond. iii. How will the fish load of the pond change as the number of full-size fantail goldfish increases? How will it change as the number of full-size common goldfish increases? LESSON 2 • Multivariable Functions 37 On Your Own b. Aidan is considering a pond kit that is rated for 140 inches of goldfish. How many full-size fantail and common goldfish can be supported in this pond?

Be prepared to share your ideas and reasoning with the class. 14 UNIT 1 • Functions, Equations, and Systems Check Your Understanding Without using your calculator or computer graphing tool, match each function rule with its graph. In each case, write a sentence explaining the type of variation that relates x and y. ” a. 5x2 c. y = 5 b. y = _ 2 x 1 d. y = _ 3 x3 x f. 5x) e. y = 3 √x I II III IV V VI LESSON 1 • Direct and Inverse Variation 15 On Your Own Applications These tasks provide opportunities for you to use and strengthen your understanding of the ideas you have learned in the lesson.

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