CCA2 Homework Check B.1.4 - B.2.3

Multiply and simplify the expression.

 $\left(x-3\right)^2$  

•  $x^2+6x+9$  

•  $x^2-6x+9$  

•  $x^2+6x-9$  

•  $x^2-9$  

Solve the equation for x.

 $3x-7\left(4+2x\right)=-x+2$  

Multiply and simplify the expression.

 $x\left(x-3\right)\left(x+1\right)$  

•  $x^3-2x^2-3x$  

•  $x^3-2x^2+3x$   

•  $x^3+2x^2-3x$  
  

•  $x^3+2x^2+3x$  
  

Find the equation of the line with x-intercept (–4,0)

and y-intercept (0,9). Write it in slope intercept form.

• $y=\frac{9}{4}x+9$

• $y=\frac{9}{4}x-4$

• $y=\frac{4}{9}x+9$

• $y=\frac{4}{9}x-4$

Use the clues in the graph to find a possible corresponding equation in y=abx form. Assume the graph has an asymptote at the x-axis.

• $y=4\left(1.75\right)^x$

• $y=1.75\left(4\right)^x$

• $y=4\left(\frac{1}{3}\right)^x$

• $y=4\left(3\right)^x$

Simplify

Simplify

Simplify

Solve the equation for the variable.

 $8a+a-3=6a-2a-3$  

The U.S. Census Bureau takes a census every 10

years. The population in 2000 was estimated at 281.4 million people. A model created at the time predicted that the population grew at about 2% per year.

How many people would the Census Bureau have expected to count in 2005 census?

• 310.7 million

• 320.7 million

• 330.7 million

• 300.7 million