Page 543 - Algebra 1

*22. Bakery Erica plans to buy 100 cookies for the parent-teacher conference and (78) to divide them equally among the number of parents attending. There will also be an additional dozen cookies given to each parent at the end of school party.
100
The number of cookies for each parent, y, is given by y = _x + 12, where x is
the number of parents. Find the asymptotes and graph the function.
23. Analyze Explain why you would not reverse the inequality sign for 6x < -42 and
(77) why you would for -6x < 42.
24. Multiple Choice What is the solution to 5 - 3(2 - m) ≥ 29?
(77) A m ≤ -10 B m ≥ -10 C m ≤ 10 D m ≥ 10 25. Use the Distributive Property to find the product of √ 4(3 + √6 ).
(76)
26. Softball Thespeedofapitchedballisrepresentedbytheexpression9x2-36x-13.
(75) Factor the expression completely.
27. Justify Why would you eliminate the factor pair (5)(9z2) in determining the
(72) binomial factors of x2 + 18xz + 45z2 ? 28. Multi-Step Use the table of values.
(71)
x
40
100
120
20
80
60
y
80
161
196
34
141
105
a. Enter the data into a graphing calculator and find an equation for the line of best fit.
b. How can you tell if there is a positive or negative correlation for the data from the equation?
29. Real Estate A realtor gets 6.5% commission for each house sold. Write and solve (70) an inequality to find the house prices that will give the realtor a commission of at
least $20,000.
30. Multi-Step Two trains leave the rail yard at the same time. One travels east and the (67) other west. The distance in miles traveled by the westbound train is d = 40t + 12.
The distance in miles traveled by the eastbound train is _1 d = 10t + 3. 4
a. Classify these two equations.
b. After a time of 10 hours, which train will have traveled farther?
528 Saxon Algebra 1