Math Algebra

Simplify.
5x + 7x

• 2x

• 12x

• -2x

• -12x

What is an algebraic                     expression for                 "the difference of r and 3"?

• r/3

• r + 3

• r - 3

• 3r

Simplify
(1/3)(21m + 27)

• 63m + 9

• 7m + 9

• 7m + 81

• 7m + 27

Solve: -n + 8 = -3(n - 4)

• All real numbers

• -1

• 2

• -7

Solve for a.
-11- 5a = 6(5a + 4)

• -1

• -2

• -3

• -4

Evaluate bc + 5a  
when  a = 3, b = 4, and c = -6

• 9

• 38

• -38

• -9

 Students mailed invitations to a play to 414 parents. Each student mailed 18 invitations. If s equals the number of
students who mailed invitations, which equation best shows the
number of invitations that were mailed?

•  s + 18 = 414 

• s ÷ 18 = 414 

• 18 ÷ s = 414

•  18s = 414

Solve for x.
2(-x - 4) = 4x + 16

• 4

• 3

• -3

• -4

Is this mapping a function or not a function? 

• Function

• Not A Function

Solve for y: 
8x + 4y= 16

• y = -8x + 16

• y = 2x -4

• y = -2x + 4

• y = -8x + 12