8th Grade Math Quiz Bowl

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Solve this equation for x. 0.5(5 - 7x) = 8 - (4x + 6) What is the value of x?

• x = 1

• x = -1

• x = 2

• x = -2

Filipo is building a rectangular sandbox for his younger brother. The length of the sandbox is 1 foot longer than twice the width of the sandbox. The perimeter of the sandbox is 29 feet.

Part A: Which equation could be used to determine w, the width, in feet, of the sandbox?

Part B: What is the width in feet of the sandbox?

The figure shows a right-circular cylinder and a right-circular cone. The cylinder and the cone have the same base and the same height. What is the volume, in cubic feet, of the cone?

• 12π

• 16π

• 36π

• 48π

Calculate the slope of the line using the points (2, 6) and (8, 4).

• 2/6

• 6/2

• -2/6

• 3

For graph B, calculate the slope of the line using the points (-5, 7) and (1, 1).

A man is trying to zombie-proof his house. He wants to cut a length of wood that will brace a door against a wall. The wall is 4 feet away from the door, and he wants the brace to rest 2 feet up the door. About how long should he cut the brace?

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Tags

CCSS.8.F.A.1

• 2 and 3

• 3 and 4

• 4 and 5

• 5 and 6

Tags

CCSS.8.NS.A.2