
Quadratic Integer Problems
Authored by Anthony Clark
Mathematics
9th Grade

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14 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find two consecutive integers whose product is 240 using a quadratic equation.
15 and 16
12 and 20
24 and 10
60 and 61
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find two consecutive integers whose product is 420 using a quadratic equation.
20 and 21
42 and 10
70 and 60
30 and 31
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find two consecutive integers whose product is 72 using a quadratic equation.
36 and 2
8 and 9
35 and 36
3 and 24
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation
s(t) = –16t2 + 64t + 80.
What will be the object's maximum height?
2 ft
80 ft
144 ft
64 ft
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How fast would you reach the water if you jump of a cliff using the formula: h(t) = -16t2 + 8t + 24?
8
1
1.5
1/4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The function f(t) = -5t2+20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object to hit the ground?
4 seconds
-2 seconds
6 seconds
9 seconds
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using the table to the left, write a curve of best fit using quadratic regression from your calculator.
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