Substitution

One-Step

100

8x if x=-6

-48

200

y² if y=2

4

300

10/y if y=2

5

Two-Step

100

2a+b

a= -3

b= 5

-1

200

2c-b

c= -6

b= 5

-17

300

2b-a

a= -3

b= 5

13

Multi-Step

100

(3a+16c)/(b^2) 

a= -4

b= -2

c= -6

17

200

(a^2-12c)/(7b+3)

a= -4

b= -2

c= 5

4

300

(2b+3a)(c^2)

a= -4

b= -2

c= 5

-400

Word

100

The area of a triangle can be found using the expression  1/2 bh where b represents the base and h represents the height. Find the area of a triangle when b=8 inches and h=15 inches.

60in^2

200

The perimeter of a rectangle can be found using the expression  2l+2w  where l represents the length and w represents the width. Find the perimeter when the length is 6 units and the width is 4 units.

20 units

300

The expression  1/2 a(b+c) can be used to find the area of a trapezoid. 

What is the area of a trapezoid if a=6, b=5, and c=7?

36m^2