Grade 8 Practice FAST

Kyle holds a balloon 8 feet off the ground, straight above his head. Ava is standing 12 feet directly to the right of Kyle. How far are Ava’s feet from the top of the balloon?

• √20 ft

• √40 ft

• √104 ft

• √208 ft

Which expression is equivalent to 28a³b⁵ – 35ab⁴?

• 7a²b⁴(4 – 5b)

• 7a²b²(4ab³ – 5b²)

• 7ab(4a²b⁴ – 5b³)

• 7b⁵(4a³ – 5a)

Which values are located between 7 and 8 on a number line? Remember that π is about 3.14.

• 2π

• π + 4

• √48

• √56

• √62

What are the domain and range of the function shown?

• Domain: x ≥ 0; Range: y ≤ 9

• Domain: x = ½; Range: y = 9

• Domain: x = 2; Range: y < 5

• Domain: x ≤ 9; Range: y ≥ 5

Catalina skates 40 feet in one direction on a skating rink. Then she turns left and skates in a straight line for 30 feet, before skating in a straight line for 48 feet back to where she started. Did her path form a right triangle?

Catalina's path _ form a right triangle because _.

• does, 30^2+40^2=48^2

• doesn't, 30^2+40^2=48^2

• does, 30^2+40^2 does not = 48^2

• doesn't, 30^2+40^2 does not = 48^2

What is the product 4/5 × (10x + 1/2)?

• 8x² + 2/5 x

• 8x² + 1/2 x

• 8x + 2/5

• 8x + 4/5 x

What is the slope of the line shown on the graph?

• -2

• -1/2

• 1/2

• 2

Tell whether each equation represents a linear or nonlinear function.

y=2x^3

• Nonlinear

• Linear

Tell whether each equation represents a linear or nonlinear function.

y=0.5x-1

• Nonlinear

• Linear

Tell whether each equation represents a linear or nonlinear function.

y=5x+3

• Nonlinear

• Linear