Page 514 - Algebra 1

24. Find the probability of choosing an odd number card from a pack of cards (68) numbered 1 through 9 or the number 1.
25. WebAuthoring Acompanydesignswebsitesandchargesafeeofy=$250+$50w. (67) The charge includes a base fee of $250, plus a weekly fee based on the number
of weeks the client requires full support. If the equation y = 800 represents the amount a company pays, for how many weeks do they receive full support?
26. Analyze The equation y = 4 describes a horizontal line with zero slope. The (67) equation x = 4 describes a vertical line with infinite slope. Classify the system
formed by these two equations.
27. Multi-Step Charlene is shopping for used DVDs. She buys some DVDs from Bin A (66) that cost $7 each and some from Bin B that cost $5 each. Charlene has $45.
a. Write an inequality representing the situation. (Hint: You must use two different variables to represent DVDs from each bin.)
b. Can Charlene buy 4 DVDs from Bin A and 4 from Bin B?
c. Charlene decides to buy 3 DVDs from Bin A. How many can she choose
from Bin B?
28. Multi-Step The amounts of measurable rain (in inches) per day recorded
(62) for Seattle in July 2007 are listed below.
0.06, 0.04, 0.01, 0.28, 0.01, 0.15, 0.21, 0.38, 0.30, 0.10
a. Create a histogram of the data.
b. Is this the best representation of the data for the entire
month? Why or why not?
29. Find the product: (4y - 4)(4y + 4).
(60)
30. Solve the system of equations by substitution. (59)
5x + 3y = 1 8x + 4y = 4
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