Find the value of
n
so that the expression is a perfect square trinomial and then
factor the trinomial.
t

t
+
Select one:
2
n
a.
n
b.
n
c.
n
d.
n
The correct answer is:
n
=
=
=
=
=
Solve the quadratic equation by completing the square and applying
the square root property.
y
+ 53 = 4
y
Select one:
2
}
}
}
}
}
12/6/2020
Graded Exam #2
Question
12
Correct
8.75 points out
of 8.75
Solve the equation by using the quadratic formula.
2
x
(
x
 2) = 5
Select one:
i
i
7/12
Question
13
Correct
8.75 points out
of 8.75
Solve the problem.
The gas mileage for a certain vehicle can be approximated by
where
x
is the speed of the vehicle in mph.
Determine the speed(s) at which the car gets 9 mpg. Round to the nearest mph.
Select one:
12/6/2020
Graded Exam #2
Question
14
Solve the problem.
8/12
8.75 points out
of 8.75
A sprinkler rotates 360° to water a circular region. If the total area watered is
approximately
, determine the radius of the region (the radius is length
of the stream of water). Round the answer to the nearest yard.
Select one:
Question
15
Correct
8.75 points out
of 8.75
Solve and express your solution in simplified form.
x
 3
x
+ 2 =0
Select one:
4
2
}
12/6/2020
Graded Exam #2
9/12
Question
16
Correct
8.75 points out
of 8.75
Question
17
Correct
8.75 points out
of 8.75
Solve the equation.
Select one:
a. { }
b.
c.
d.
The correct answer is:
Solve the problem.