2021 STAAR Algebra review part 2

  $31\ge1-3\left(3x-1\right)$  

What is the solution to the inequality?

•  $x\ge-9$  

•  $x\ge-3$  

•  $x\le-9$  

•  $x\le-3$  

 $y=0.94^x$ 

 is the equation exponential growth or decay?

• Growth

• Decay

• Neither

 $y=x^2$  What type of equation is this?

• Growth

• Decay

• Quadratic

• Linear

 $y=6\left(1.02\right)^x$  Is this Growth or Decay or neither?

• Growth

• Decay

• Neither

 $y=A\left(1+r\right)^x\ \ \ or\ y=A\left(1-r\right)^x$  
A tree 5 feet tall grows 4% each year.  How tall will the tree be at the end of 12 years?

• 4 ft

• 8 ft

• 7 ft

• 10 ft

 $21x^2+13x-20$  

Which expression is a factor?

• 3x-4

• 7x-5

• 7x+4

• 3x+5

 $f\left(x\right)=-4\left(x+7\right)^2-6$  
which function is equivalent?

•  $f\left(x\right)=-4x^2-56x-202$  

•  $-4x^2+14x+43$  

•  $-4x^2-56x-172$  

•  $-4x^2+190$  

What is the Domain and Range of   $f\left(x\right)=x^2-2x+2$  

• Domain: All Real Numbers
  Range: $y\ge-1$

• Domain: $x\ge1$
  Range: All real numbers

• Domain: All Real Numbers
  Range: $y\ge1$

• Domain: $x\ge-1$
  Range: All real numbers

 $x^2-17x-60$  
Which equation is equivalent?

• (x-3)(x+20)

• (x-5)(x+12)

• (x-20)(x+3)

• (x+5)(x+12)

 $\left(4x^2y^3\right)^3$  
What expression is equivalent?

•  $64x^5y^6$  

•  $4x^6y^9$  

•  $4x^5y^6$  

•  $64x^6y^9$