Creating Equivalent Expressions

Find the value of

 $xy^2+2$  

if x = -5
and y = 3

Solve!

 $\left(\frac{3mn}{m^2}\right)+yz$   

if m=2, n=-2, y=1/2, and z= -6

• 6

• -6

• 3.75

• -3.75

Which expression represents the following:

"Sarah Beth sold half of her Girl Scout cookies last weekend"

• $2c$

• $c-2$

• $c-\frac{1}{2}$

• $\frac{1}{2\ }c$

Which expressions represents the following:

"Three times the sum of seven and some number"

• $3\left(7+n\right)$

• $3\left(7\right)+n$

• $3n+7$

• $3\times7+n$

Write an equivalent expression:

 $4\left(b-8\right)$  

Which expression is equivalent to

 $4b+8c-12$  

•  $b+2c-3$  
  

•  $2b+4c-6$  
  

•  $4\left(b+2c-3\right)$  

•  $3\left(b+2c-4\right)$  
  

Kevin went to an amusement park 3 times and paid a total of (9g + 15t) dollars. If he paid the same amount each time, which expression represents the number of dollars per trip?

• 3g + 5t

• 3(6g + 12t)

• 27g + 45t

• 12b + 18t

Which one DOES NOT belong?

• 5($3t)

• 5(t+$3)

• 5t+$15

• 5($3+t)

Simplify the expression:  $2n+6\left(n-7\right)$  

• 8n+42

• 4n-7

• 4n-7

• 8n-42

Which expression is equivalent to

5(3x + 2) + 36x – 14?

• 36x + 11

• 36x + 39

• 51x – 4

• 51x – 12