Page 755 - Algebra 1

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Error Analysis Student A said that the following set satisfies an exponential function because there is a common ratio of 3 among the y-values. Student B said that this is not so. Which student is correct? Explain the error.
{(3, 1), (5, 3), (6, 9), (7, 27)}
Multi-Step Niall has a baseball card whose value, in dollars, x years after he acquired
it, is represented by the function f(x) = 4.8(1.25)x. If Niall bought the card in the year 2000, how much more is it worth in 2010 than it was in 2005?
_1 x Geometry Mr. Flores gives the length of a rectangle, in inches, as f(x) = 16(2 ) ,
where x is the number of times he cuts the length in half. What is the length of the rectangle after Mr. Flores has cut it in half 4 times? 6 times?
0 times?
Probability For the function f(x) = 7(5)x, what is the probability that for a randomly chosen x-value from the domain of {0, 1, 2, 3, 4, 5}, f(x) is a number between 100 and 1000?
Is the graph an absolute-value function? Explain.
y
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x
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8
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( ( 1 1 0 0 6 6 ) )
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( (1 1 0 0 6 6) )
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y > _1 x + 3 Graph the system 4 .
y > - _1 x + 3 4
-8
Baseball An outfielder catches a ball 120 feet from the pitcher’s mound and throws it to home. If d = ⎢90t - 120 represents the ball’s distance from the pitcher’s mound, how would the graph change if the outfielder caught the ball 100 feet from the pitcher’s mound?
Renovations Nadia is using 48 tiles to cover a floor. The tiles come in 6-inch, 12-inch, and 13-inch sizes. If the total area of the floor is 6912 square inches, which tile size will fit best?
Projectile Motion The equation for the time in seconds (t) it takes an object to strike the ground is -4.9t2 - 53.9t = -127.4. When will the object strike the ground?
Find the next 3 terms of the sequence 5, 4.5, 4.05, 3.645, ....
Multiple Choice Which of the following radical equations has no solution?
A √ x - 3 = x - 9 C √ x + 7 = - 2
B 13√ x = 65 D √ x + 1 0 = √ 2x + 8
Write Why is it important to isolate the radical in a radical equation? Saxon Algebra 1