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Intermediate Algebra – Student Workbook – Second Edition 2013

Intermediate Algebra – Student Workbook – Second Edition 2013

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Appendix A:<br />

You Try Answers<br />

You Try Problem 11<br />

x = 33 (exact) and no rounding needed<br />

You Try Problem 12<br />

3 0.<br />

75 1<br />

exact x , rounded to three decimals 0.183 (note that check not possible in this<br />

7<br />

lesson unless you use the exact value which is very challenging)<br />

You Try Problem 1<br />

a) 8<br />

b) 4<br />

c) -3<br />

d) 1 3<br />

Lesson 4b<br />

You Try Problem 3<br />

b) 2.307<br />

c) 1.195<br />

d) 8.548<br />

e)15.730<br />

You Try Problem 6<br />

x = log 3<br />

5.3(exact),<br />

x = 1.518 (rounded)<br />

You Try Problem 9<br />

a) x > 0<br />

b) All real numbers<br />

c) (1,0) d) x = 6<br />

You Try Problem 3<br />

a=2, b=0, c=-5<br />

parabola opens up<br />

y-int = (0, -5)<br />

You Try Problem 6<br />

a=2, b=0, c=-5<br />

Vertex (0, -5)<br />

Axis of symmetry equation: x = 0<br />

Lesson 5a<br />

Scottsdale Community College Page 288 <strong>Intermediate</strong> <strong>Algebra</strong>

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