Solving Expressions and Equations

Solving Expressions and Equations

Final Review

Multiple Choice

 $\left(19-7\right)\div4+11$ 

• 14

• 15

• 0.8

• 13

Multiple Choice

 $5\times\left(7-2\right)+\left(8+1\right)$  

• 70

• 77

• 42

• 34

Multiple Choice

 $\left(4+4-5\right)\times-5+\left(-2\right)^3$  

• -23

• 23

• 20

• -30

Multiple Choice

If $f\left(x\right)=x^2-x+3$ , what would  $f\left(-3\right)$  equal?

• -3

• -9

• 15

• -15

Multiple Choice

Evaluate  $f\left(-2\right)\ \ if\ \ \ f\left(x\right)=x^2+3$  

• -7

• -1

• 1

• 7

Poll

How are you feeling about Expressions and Function notation on a scale of 1 to 3

• 1: I need more help

• 2: I'm alright

• 3: EXPERT

Multiple Choice

The objective when solving an equation is to....

• isolate the variable.
• check the solution.
• guess and check.
• Combine Like Terms.

Multiple Choice

x + 12 = 20

• x = 32
• x = -32
• x = 8
• x = -8

Multiple Choice

-y = 22

• y = 1
• y = -22
• y = 0
• y = -1

Multiple Choice

Solve for x:

• x = 20

• x = 7

• x = 10

• x = 3

Multiple Choice

how would you solve this equation: 9x=153?

• multiply

• divide

• add

• subtract

Multiple Choice

6 - 3a = 21

• a= 9
• a= -9
• a= -5
• a= 5

Multiple Choice

-3a + 8 = 14

• a= -2
• a= -7.5
• a= 2
• a= 6

Multiple Choice

33 = 4a - 7

• a=-10
• a=10
• a=4.5

Multiple Choice

What is the first step to solve this equation?
x - 5 = 7 - 2x

• Add 7 to both sides of the equation

• Add 2x to both sides of the equation

• Subtract 2x from both sides of the equation

• Subtract 5 from both sides of the equation

Multiple Choice

Solve the equation:
3(x - 1) = 2x + 9

• x = 12
• no solution
• x = 10
• x = 6

Multiple Choice

Which step cannot be performed first when solving the equation
5 - 2(x - 7) = x + 1 + 3x

• Distributing -2 to (x - 7)
• Combining x and 3x
• Subtracting 1 from both sides
• 5 - 2

Multiple Choice

Solve the equation:
3x - x + 2 = 4(2x - 1)

• infinite solutions
• x = 1
• x = -1
• no solution

Multiple Choice

Solve the equation:
3x - x + 4 = 4(2x +1)

• no solution
• infinite solutions
• x = 6
• x = 0

Poll

On a scale of symbols how do you feel about solving equations?

• ?: So Confused

• #: Need some more help

• !: I'm pretty decent

• $$: Amazing!

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Homework is due tomorrow at 8AM