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9 Problems on Mathematics for Business - Examination 1 | MATH 121, Exams of Mathematics

Lander UniversityMathematics

Material Type: Exam; Class: Math for Bus, Life Science; Subject: Mathematics; University: Lander University; Term: Unknown 1989;

Typology: Exams

Pre 2010

Uploaded on 08/18/2009

koofers-user-a9o
koofers-user-a9o 🇺🇸

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MATH 121 – 19 CH 1 Test NAME_______________________
1. 7X + 2 = 3X - 6
3 4
2. 3X - 4 = X – 9
6 2
3. 3X – 7(2X + 4) = 5X – 2
5. Find the Domain of each --- Show your work
a. y = 3x – 8
b. y = (9-x) Square root of (9-x)
c. y = 3
x + 2
d. y = x – 7
4+ x
6. Given f(x) = 3x² + x
g(x) = 5x + 2
Find:
a. f o g
b. g o f
c. g o g
pf2

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MATH 121 – 19 CH 1 Test NAME_______________________

  1. 7X + 2 = 3X - 6 3 4
  2. 3X - 4 = X – 9 6 2
  3. 3X – 7(2X + 4) = 5X – 2
  4. Find the Domain of each --- Show your work a. y = 3x – 8 b. y =  (9-x) Square root of (9-x) c. y = 3 x + 2 d. y = x – 7 4+ x
  5. Given f(x) = 3x² + x g(x) = 5x + 2 Find: a. f o g b. g o f c. g o g
  1. Given f(x) = x² + 5x – 3 Solve f(x+h) – f(x) h
  2. The Supply function for a widget is ____________when (10,50) & (60,250) The Demand function for the widget is __________when (20,100) & (30,70) Find the Market Equilibrium point (q,p)
  3. Solve the following systems of equations. If the solution DOES NOT EXIST, TELL WHY NOT. a. -3x + 10y = 10 x + 5y = 5 b. 5x – 7y = - 4x + 2y = 6 c. 7x + 3y = 20 14x + 6y = 10