Math 111 algebra
Section A : Multiple Choice ( 1 point each )
1. What the value of \( 3x + 5 \ ) when \( x = 2 \ )?
a ) 11 b ) 10 c) 6 d ) 8
2. Which of the following is a solution to the equation \( 2x 4 = 10 \
a ) 5 b ) 7 c ) 3 d) 6
3. What is the slope of the line by the equation \( y = 4x + 2 \ )?
a ) 2 b ) 4 c ) 1 d) 0
4. \( f (x) = 2x^2 + 3), what is \( f 3) \ )?
a ) 15 b ) 21 c ) 27 d ) 18
5. Which of the following is a quadratic equation ?
a ) \( x + 2 0 \ ) b ) \( x ^2 - 5x + 6 = 0 \ ) c)\( 3x + 1= 7 \ ) d ) \( 4x - 2 = 0)
6. What is area of a triangle with a base of 10 units and a height of 5 units ?
a ) 25 square units b ) 50 square units c ) 15 square units d ) 30 square units
7. sum of the angles in a is :
a ) degrees b ) 180 degrees c )360 degrees d ) 270 degrees
8. What the value of \( \ sqrt{64} \ )?
a ) 6 b ) 8 c )10 d ) 12
9. If \( a = 3 \ ) and \( = 4 \ ), is \( a ^2 + ^2 \ )?
a 12 b )25 c ) 20. d ) 10
10. Which of the following represents the equation of a circle center at ( 0,0 and radius 5?
a) \( x ^2 + ^2 = 5) b ) \( ^2 + y ^2 = 25 \ )
c) \( x ^2 + y ^2 = 10 \ ) d ) \( x ^2 + y ^2 15 \ )
Section B : True /False ( point each )
11. The product of two numbers is positive .
True /False
12. A rectangle has four equal sides .
True /False
13. The median of a set of is the middle value when arranged in order .
True /False
14. The equation \( y = + b \ ) represents a linear function .
True /False
15. The P ythagorean applies only to right triangles .
True /False
16. The absolute value of a number is always .
True /False
17. function can have more than one output for a single input .
True /False
18. The x -intercept of a line is where the line crosses the y -axis.
True /False
19. The sum the interior angles of a quadr is 360 degrees .
True /False
20. A prime has exactly two distinct positive divis ors.
Section C : Short ( 2 points each )
21. Solve for \( x \ ): \( 5x + = 18 \ ).
22 What is the formula for the of a circle ?
23. If a triangle has sides of 3, 4, and 5, is it a right triangle ? Explain why .
24. Calculate the mean of the following set of numbers : 4, 8, 6, 5, 3.
25. Define a function and provide an .
26. What is the difference between a permutation and a combination ?
27. If the circumference of a circle is 31.4 units , what is its radius ? ( Use \( \ pi \ approx 3.14 \ ))
28. Explain what a linear equation is and give an example .
29. What is the slope -intercept form of a line ?
30. How do you find the greatest common divisor ( GCD) of two numbers ?
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