Page 191 - Algebra 1

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18. Measurement To convert between feet and inches, use the equation i = 12f where i (20) is the number of inches and f is the number of feet. Complete the table and graph
the solutions.
f
i
3
5
8
10
19. Verify True or False. A repeating decimal multiplied by a variable is an irrational (2) number. If the statement is false, give a counterexample.
20. Astronomy ThetemperatureonthesurfaceofMarsvariesby148°F.Thehighest
(6) temperature is about 23°F. What is that lowest temperature on the surface of Mars?
21. Consumer Economics A strawberry container costs $1 and the strawberries cost (17) $2 per pound. Write an expression to represent the total cost for a container
with s pounds of strawberries.
22. Simplify x2 - 3yx + 2yx2 - 2xy + yx.
(18)
23. Solve -3y + _1 = _5 .
(23) 27
24. Solvek+4-5(k+2)=3k-2.
(28)
25. Generalize The value of z + 2 is an odd integer. What generalizations can be made
(9) about z using this information?
26. Which expression is greater: _1 - 1 or _1 - 1.
(10) 32
27. Justify Simplify (3 + 5) - 23. Justify each step using the order of operations or
(7) mathematical properties.
28. Analyze Find the value of y when x = 2.
(6)
-x - (-2) = y
29. PopulationGrowth Theexpression303,000,000×(1.015)t,wheretstandsforyears, (3) represents the population growth of the U.S.A. Based on this expression, about
how many people will live in the U.S.A. eight years from now?
30. Probability On the first street in Hidden Oaks subdivision, 5 out of 20 families
(Inv 1) own trucks.
a. What is the probability that a randomly selected family in the subdivision
owns a truck?
b. Predict the number of truck-owning families you can expect among the 140 families living in the subdivision.
176 Saxon Algebra 1