Algebra 1 GMAS Review Unit 1

 Look at the radical.
 $-8\sqrt{726}$  
What is a rewritten form of the radical?

•  $-88\sqrt{6}$  

• -90.75

•  $-986\sqrt{6}$  

• -2,904

 $2\sqrt{8}\cdot\sqrt{20}$  

Look at the expression.

Which of these is equivalent to this expression?

•  $2\sqrt{28}$  

• 5

•  $8\sqrt{10}$  

•  $32\sqrt{10}$  

Which sum is rational?

• $\pi+18$

• $\sqrt{25}+1.75$

• $\sqrt{3}+5.5$

• $\pi+\sqrt{2}$

Which product is irrational?

• $\sqrt{2}\cdot\sqrt{50}$

• $\sqrt{64}\cdot\sqrt{4}$

• $\sqrt{9}\cdot\sqrt{49}$

• $\sqrt{10}\cdot\sqrt{8}$

A rectangle has a length of 12 meters and a width of 400 centimeters. What is the perimeter, in cm, of the rectangle?

• 824

• 1,600

• 2,000

• 3,200

Jill swam 200 meters in 2 minutes 42 seconds. If each lap is 50 meters long, which time is her estimated time, in seconds, per lap?

• 32

• 40

• 48

• 60

In which expression is the coefficient of the n term -1?

• 3n² + 4n - 1

• -n² + 5n + 4

• -2n² - n + 5

• 4n² + n - 5

The expression s² is used to calculate the area of a square, where s is the side length of the square. What does the expression (8x)² represent?

• the area of a square with a side length of 8

• the area of a square with a side length of 16

• the area of a square with a side length of 4x

• the area of a square with a side length of 8x

What is the product of 7x - 4 and 8x + 5?

• 15x + 1

• 30x + 2

• 56x² + 3x - 20

• 56x² - 3x + 20

A model of a house is shown.

What is the perimeter, in units, of the model?

• 32x + 12

• 46x + 25

• 50x + 11

• 64x + 24