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6 www c k12 org chapter 1 expressions equations and

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www.ck12.orgChapter 1.Expressions, Equations, and FunctionsExample CTo prevent major accidents or injuries, these horses must be fenced in a rectangular pasture. If the dimensions of thepasture are 300 feet by 225 feet, how much fencing should the ranch hand purchase to enclose the pasture?
Video ReviewMEDIAClick image to the left or use the URL below.URL:7
1.2. Expressions with One or More Variableswww.ck12.orgMEDIAClick image to the left or use the URL below.URL:–>Guided Practice1. Write the expression 2×ain a more condensed form and then evaluate it for 3=a.2. If it costs $9.25 for a movie ticket, how much does it cost for 4 people to see a movie?Solutions:
Explore MoreSample explanations for some of the practice exercises below are available by viewing the following video. Notethat there is not always a match between the number of the practice exercise in the video and the number of thepractice exercise listed in the following exercise set. However, the practice exercise is the same in both.CK-12 Basic Algebra: Variable Expressions(12:26)MEDIAClick image to the left or use the URL below.URL:In 1–4, write the expression in a more condensed form by leaving out the multiplication symbol.1. 2×11x2. 1.35·y3. 3×144.14·zIn 5–9, evaluate the expression.5. 5m+7 whenm=38
www.ck12.orgChapter 1.Expressions, Equations, and Functions6.13(c)whenc=637. $8.15(h) whenh=408.(k-11)÷8 whenk=439.(-2)2+3(j)whenj=-3In 10–17, evaluate the expression. Leta=-3,b=2,c=5,and d=-4.10. 2a+3b11. 4c+d12. 5ac-2b13.2ac-d14.3bd15.a-4b3c+2d16.1a+b17.abcdIn 18–25, evaluate the expression. Letx=-1,y=2,z=-3,andw=4.18. 8x319.5x26z320. 3z2-5w221.x2-y222.z3+w3z3-w323. 2x2-3x2+5x-424. 4w3+3w2-w+225. 3+1z2In 26–30, evaluate the expression in each real-life problem.26. The measurement around the widest part of these holiday bulbs is called theircircumference.The formula forcircumference is 2(r)π, whereπ3.14 andris the radius of the circle. Suppose the radius is 1.25 inches.Find thecircumference.27. The dimensions of a piece of notebook paper are 8.5 inches by 11 inches. Evaluate the writing area of thepaper. The formula for area is length×width.

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Term
Winter
Professor
Ms. McGonigal
Tags
Algebra, Linear Equations, Quadratic equation, Fraction Bars

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