Unit 1 Lesson 2: Expressions, Formulas and Solving Equations

Simplify.  $5x-4\left(2x-7x^2\right)+3x^2$  

•  $31x^2-3x$  

•  $31x^4-3x^2$  

•  $-25x^2-3x$  

•  $-25x^2+9x$  

Tags

CCSS.6.EE.A.3

Simplify. $\frac{\left(2\cdot3\right)\div\left(7-2\right)}{5-4}$  

•  $6$  

•  $-1.14$  

•  $3.14$  

•  $7.2$  

Tags

CCSS.7.NS.A.3

Evaluate for  $w=6,\ x=0.4,\ z=-3$  

 $z\left(x+1\right)$  

•  $-.2$  

•  $-21$  

•  $-4.2$  

•  $4.2$  

Tags

CCSS.6.EE.A.2C

Evaluate for $w=6,\ x=0.4,\ z=-3$  

 $w-3x+z$  

•  $-10.2$  

•  $1.8$  

•  $.4$  

•  $-1.8$  

Tags

CCSS.6.EE.A.2C

Write an algebraic expression to represent the verbal expression.

The sum of 5 and three times a number

• $5+3n$

• $5\left(n+3\right)$

• $3n-5$

• $3\left(5+n\right)$

Tags

CCSS.6.EE.A.2A

Write an algebraic expression to represent each verbal expression.

The product of the cube of a number of -6

•  $\left(-6n\right)^3$  

•  $6+3n$  

•  $-6n^3$  

•  $6\cdot\frac{n}{3}$  

Tags

CCSS.6.EE.A.2A

Using the formula  $I=prt$ , find the simple interest for the following:
 $p=\text{1,800}$  
 $r=6\%$  
 $t=4\$  

• $432

• $43,200

• $4,320

• $43.2

Tags

CCSS.6.EE.B.6

Write an algebraic expression to represent each verbal expression.

Twice the sum of a number and 8

• $2\left(n+8\right)$
  

• $2n+8$

• $n+16$

• $8\left(n+2\right)$

Tags

CCSS.6.EE.A.2A

 $-14+n=-6$  Solve the equation.

•  $n=8$  

•  $n=-8$  

•  $n=-20$  

•  $n=12$  

Tags

CCSS.6.EE.B.7

Solve the equation:
 $2\left(5x+1\right)=3x+23-7x$ 

•  $x=1.5$  

•  $x=3$  

•  $x=2$  

•  $x=21$  

Tags

CCSS.8.EE.C.7B