7M 1.12 Review

Simplify the expression.

 $-9\left(a+2\right)+a$  

Solve for x.

 $4x-2=30$  

• 6.5

• 7

• 8

• 9

Four more than half of a number, n, is 34. Which equation represents the situation?

• $4-\frac{1}{2}n=34$

• $4+\frac{1}{2}n=34$

• $4=\frac{1}{2}n+34$

• $4=\frac{1}{2}n\times34$

 $k-5=97$  
Which operation would be used to solve for the variable?

• Addition

• Subtraction

• Multiplication

• Division

 $2x+3=23$  
Which operations would be used to solve for the variable?

• Addition, then multiplication

• Subtraction, then division

• Multiplication, then subtraction

• Division, then subtraction

How can you check the answer for any problem where you solve an equation for a variable?

• Superposition

• Superstition

• Multiplication

• Substitution