Here are the steps to solve the problems from the assignment: 1) 12/8 = 1.5 Divide 12 by 8. 2) 3.3/7 = 0.4714285714 Divide 3.3 by 7. 4) 16 Evaluate x4 when x = 4. 6) 64 Evaluate x4 when x = 4. 8) 4n Evaluate 4n when n = 2. 10) 27 Evaluate n3 when n = 3. 12) 8 Evaluate x3 when x = 2. 14) 125 Evaluate x5 when x = 5. 16) 243 Evaluate

1. ????1. In the fraction , is the numerator and is the denominator. 100ANSWER2, 3ANSWER2. Two fractions that represent the same number are called fractions.233. The word percent (%)means “divided by .”equivalentANSWERPrerequisite SkillsVOCABULARY CHECKCopy and complete the statement.

2. 414. +15. –ANSWER15126. 7. ANSWER23533215243564552855ANSWERANSWERPrerequisite SkillsSKILLS CHECKPerform the indicated operation.

3. 0.04ANSWER0.23ANSWERANSWER0.0150.025ANSWERPrerequisite SkillsSKILL CHECKWrite the percent as a decimal.8. 4% 9. 23%10. 1.5%11. 2.5%

4. Section 1.1Evaluating ExpressionsThis chapter introduces a lot of vocabulary and basic concepts for algebra.Vocabulary will play a very important role in this class.You are expected to take notes over both vocab. and examples.

5. Section 1.1 Evaluating ExpressionsKey VocabularyVariableAlgebraic expression (variable expression)PowerBaseExponentSquared & Cubed

6. 1. 12 1.58ANSWER2. 3.3 723.1ANSWERLesson 1.1, For use with pages 2-7Perform the indicated operation.

7. a.13n=1339b.39nEXAMPLE 1Evaluate algebraic expressionsEvaluate the expression when n =3.Substitute 3 for n.= 39Multiply.=Substitute 3 for n.= 3Divide.c.n–1=3–1Substitute 3 for n.= 2Subtract.d.n+8=3 + 8Substitute 3 for n.= 11 Add.

8. EXAMPLE 2Evaluate an expressionMoviesThe total cost of seeing a movie at a theater can be represented by the expression a + rwhere ais the cost (in dollars) of admission and ris the cost (in dollars) of refreshments. Suppose you pay $7.50 for admission and $7.25 for refreshments. Find the total cost.

9. ANSWERThe total cost is $14.75EXAMPLE 2Evaluate an expressionSOLUTIONa +rWrite expression.Total cost=Substitute7.50 foraand7.25for r.= 7.50 + 7.25= 14.75Add.

10. =2 2 2 2EXAMPLE 4Evaluate powersEvaluate the expression.a. x4 whenx = 2b. n3 whenn = 1.5SOLUTIONa. x4 = 24b.n3 =1.53= (1.5)(1.5)(1.5)= 3.375= 16

11. =8 8 8for Example 4GUIDED PRACTICEEvaluate the expression.9. x3 whenx = 810. k3 whenk = 2.5SOLUTION9. x3 = 8310. k3 =2.53= (2.5)(2.5)(2.5)= 15.625= 512

12. s3V =EXAMPLE 5Evaluate a powerStorage cubesEach edge of the medium-sized pop-up storage cube shown is 14 inches long. The storage cube is made so that it can be folded flat when not in use. Find the volume of the storage cube.SOLUTIONWrite formula for volume.= 143Substitute 14 for s.= 2744Evaluate power.The volume of the storage cube is 2744 cubic inches.