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Intermediate Algebra – Student Workbook – Second Edition 2013

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Appendix A:<br />

You Try Answers<br />

You Try Problem 8<br />

a) sketch of data points<br />

b) y = .322x + 24.155<br />

c) 26.24; (6, 26.24)<br />

d) 26.087; (6, 26.087)<br />

e) given data set is not exactly linear so model is an approximation or best fit<br />

f) x = 12.376; (12.376, 28.14)<br />

You Try Problem 1<br />

follow the given example<br />

Lesson 2b<br />

You Try Problem 2<br />

g(t) = 3t <strong>–</strong> 4; g(4) = 8; when g(t) = -1, t = 1<br />

f(x) = x <strong>–</strong> 5; f(-4) = -9; when f(x) = 10, x = 15<br />

g(x) = 2x + 4; g(3) = 10; when g(x) = 5, x = ½<br />

You Try Problem 5<br />

a) 11<br />

b) <strong>–</strong>x 2 + x + 3<br />

You Try Problem 8<br />

a) 9x 2 <strong>–</strong> 4<br />

b) 2x 5 <strong>–</strong> 7x 3 + 10x 2 <strong>–</strong> 4x + 5<br />

c) 4x <strong>–</strong> 1 d) -24x 4<br />

You Try Problem 11<br />

a)<br />

b)<br />

You Try Problem 14<br />

Not all answers provided for this problem<br />

a) 0<br />

c) -4<br />

e) -1<br />

g) 0 or -2<br />

i) -3<br />

k) -4<br />

You Try Problem 16<br />

Not all answers provided for this problem<br />

c) P(x) = 0.90x - 450<br />

d) and e) 500 chocolates to break even<br />

Scottsdale Community College Page 285 <strong>Intermediate</strong> <strong>Algebra</strong>

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