Austen accidentally drops a penny off the Empire State Building, if the Empire State Building is 1,250 feet high, the acceleration formula is feet/second², the starting speed is 10 feet per second, the ending speed is 20 feet per second, and 2 seconds have passed. What is the acceleration of the penny?

• 5 f/s²

• 2.5 f/s²

• 7.5 f/s²

• 10 f/s²

Tags

CCSS.HSF-LE.A.1B

Jordan get stuck in a hamster ball that has the surface area of 20 ft², the thickness of the ball is 4 inches. what is the volume of the ball rounded to the nearest hundredth? Use 3.14 for π

• 3.14 ft³

• 8.41 ft³

• 5.06 ft³

• 5.12³

Tags

CCSS.8.G.C.9

CCSS.HSG.GMD.A.3

Kingsley decided to start collecting rhombicosidodecahedrons, and wants to find the volume of them, if the surface area (≈59.3s²) of the rhombicosidodecahedron he found was 90 ft² what is the volume (≈41.61s³) of the rhombicosidodecahedron Kingsley found? Round your answer to the nearest tenth.

• 78.2 ft³

• 77.4 ft³

• 77.8 ft³

• 77.6 ft³

Mathcounts was founded in 1983. What is the last two digits of 7^1983? Round your answer to the nearest integer.

Nathan ate 2,763 rocks and wants to find the largest prime factor for some reason, what is the largest prime factor of 2,763

• 927

• 307

• 631

• 763