Combining Like Terms with Perimeter and Area

What is the perimeter of a triangle with sides the following lengths: 2a + 4c, 3c + 7, and 6a - 4?

Combine like terms in the expressions.

• 8a + 11c

• 6a + 7c + 3

• 8a + 7c + 3

• 8a + 7c + 11

Farmer Bob's son built a track to walk his pet pig.  The track goes around the pig pen.  The pig pen is 15 feet long and 21 feet wide.  If the pig walks all the way around the track, how many feet did he walk?

• 72 feet

• 36 feet

• 36 square feet

Preston and Brelon were at the playground measuring the new sandbox.  It was 6 feet wide and 11 feed long. What was the area of the sandbox

• 22

• 66

• 60

• 17

Alice is building a​ fenced-in pen in her backyard for her ​dog, as shown. Write an expression that represents the total amount of fencing she will​ need, in feet.

• 4x + 26

• 26x

• 2x + 13

• 15

• 8x² + 4
• 4x² + 2

What is the perimeter of a rectangle with a width of 3x²+2x-4 and a length of 5x²-4x+4? (Hint-Draw a picture)

• 8x²-2x

• 16x²-4x

• 10x²-2x-8

• 20x²-4x-16

Find the area of a rectangle with length (x-5) and width (3x+1).

• 3x²+16x-5

• 3x²-14x+5

• 3x²-14x-5

A rectangle has width (2x + 3) and length (2x - 4).  What is the perimeter of the rectangle?

• 4x² - 12

• 4x² - 1

• 8x² - 2

• 4x² - 2x - 12

Which expression represents the perimeter of the triangle?

• 8xy + 3

• 5x + y + 3

• 5x + 4y + 3

• 6x + 3y + 3

What is the perimeter for the given rectangle:

• 6x³ - 9x² + 10x - 15

• 6x² + 1x - 15

• 6x² + 4x + 4

• 6x³ + 1x² - 15x