Exam - BARTON COLLEGE PRACTICE PLACEMENT TEST
Execise 1
Simplify: ![](data:image/png;base64,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)
a) 4
b) ‐4
c) 12
d) ‐10.5
Solution
The order of mathematical action are:
Power & Roots
Multiplication & Division
Addition $ Substration
Multiplication & Division
Addition $ Substration
So we solve the according the following rule:
The correct answer is c.
Execise 2
Simplify: (2a – 4) + 2(a – 5) – 3(a+1)
a) 7a – 11
b) a – 17
c) a – 11
d) 7a ‐17
b) a – 17
c) a – 11
d) 7a ‐17
Solution
(2a – 4) + 2(a – 5) – 3(a+1)=
2a - 4 + 2a - 10 - 3a - 3 =
2a + 2a - 3a -4 -10 -3 =
a -17
The correct answer is b.
Execise 3
Evaluate the expression:
, when a = 2 and b = 5
a) ‐14
b) 1
c) 66
d) 81
Solution
we substitute a = 2 , b = 5 at the expression :
The correct answer is b.
Execise 4
Firefighters use the formula S = 0.5P + 26 to compute the horizontal range S in feet of water from a particular hose, where P is the nozzle pressure in pounds. Find the horizontal range if pressure is 90 lb.
a) 44 feet
b) 450 feet
c) 19 feet
d) 71 feet
Solution
We substitute P = 90 lb at the formula S = 0.5P + 26.S = 0.5*90 + 26 = 45 + 26 = 71
The correct answer is d.
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