Page 231 - Algebra 1

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Evaluate the expression d = 6 · _1 for c = 2. c-2
Physical Science The wavelengths of microwaves can range from 10-3 m to 10-1 m. Express the range of wavelengths using positive exponents.
Multiple Choice Ms. Markelsden baked 36 cookies in 45 minutes. How many cookies can she bake in 3 hours?
A 45 cookies B 81 cookies
C 64 cookies D 144 cookies
Does y = x2 + 2 represent a function? Explain how you know.
Architecture A model of a building is 15 inches tall. In the scale drawing, 1 inch represents 20 feet. How tall is the building?
Generalize Given _2 = _1 , where a and b are positive numbers, write an equation ba
that shows how to find a.
The line graph at right shows the costs of tuition at a university over the past 5 years. How might this graph be misleading?
Write The equation x + 5 = x - 5 has no solution. Explain why it has no solution.
Costs of Tuition at XYZ University
50000 40000 30000 20000 10000
0
2003 2004 2005 2006 2007
Verify Solve 16x + 4(2x - 6) = 60 for x. Check your answer.
True or False: Any irrational number divided by an irrational number will be
an irrational number. Explain your answer.
Years
Savings Hector has $400 in his savings account. Each week he deposits his $612.50 paycheck and takes out $250 to live on for the week. If he wants to buy a car for $5500, about how many months will it take him to save up for the car?
Multi-Step Jamal is riding his bike at a rate of about 8 miles per hour. How many hours will it take Jamal to ride 50 miles?
Car Rental A family rented a car that cost $45 per day plus $0.23 per mile. If the family rented the car for 7 days and paid $395.50 altogether, how many miles did they drive?
Error Analysis Two students determine whether the ordered pairs in the table represent a function. Which student is correct? Explain the error.
x
y
7
10
-2
-3
7
12
5
4
Student A
(7, 12) and (7, 10)
The x-values are the same, so it is not a function.
Student B
All the y-values are different, so it is not a function.
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Saxon Algebra 1
Costs