Algebra 1(Part II)

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10 points

Which quadratic function, when graphed, has x-intercepts of 4 and −3?

y =(3x −1)(4x +1)

y =(3x +1)(8x−2)

y =(x−3)(x + 4)

y =(x +3)(2x−8)

10 points

Which is the factored form of 3a^2 −24 ab + 48b^2 ?

(3a−16 b)( a−3b)

3(a−8b)( a−8b)

(3a−8b)( a−6b)

3(a−4b)( a−4b)

10 points

Which number does not have a reciprocal?

–1

1/1000

10 points

The cost to rent a construction crane is $750
per day plus $250 per hour of use. What is the
maximum number of hours the crane can be
used each day if the rental cost is not to exceed
$2500 per day?

3.7

13.0

2.5

7.0

10 points

What is the solution to the inequality x − 15 > 4?

x > 9

x <9

x >19

x <19

10 points

The total cost (c) in dollars of renting a sailboat for n days is given by the equation

c = 120 + 60n.

If the total cost was $360, for how many days was the sailboat rented?

10 points

What is the y-intercept of the graph of 4x + 2 y = 12?

-2

-4

10 points

What is the solution for this equation?
x^2+3x-4

x =−4 or x = 3

x =−1 or x = 4

x =−1 or x = 3

x =−4 or x = 4

10 points

(4x^2 −2x +8)−(x^2 + 3x−2)=

3x^2 −5x +10

3x^2 −5x +6

3x^2 + x + 10

3x^2 + x + 6

10.

10 points

Which relation is a function?

{(–1, 3), (–2, 6), (0, 0), (–2, –2)}

{(4, 0), (4, 1), (4, 2), (4, 3)}

{(7, 4), (8, 8), (10, 8), (10, 10)}

{(–2, –2), (0, 0), (1, 1), (2, 2)}

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