Hard Quadratic Word Problems

The height of an item falling can be modeled by h_t = -16t² + h_o . Where h_o is the initial height in feet, and h_t is the height in feet at time t in seconds. If I drop a penny at a height of 18.6 feet, how long will it take the item to hit the ground?

• 1.08 seconds

• 2.08 seconds

• 0.08 seconds

• 1.17 seconds

The number of bags of peanuts sold at the Kennedy Center from 1900 to 2004 can be modeled by S = 4t² + t - 3, where t is the number of years since 1900. How many bags of peanuts were sold in 2000?

• 40,050

• 40,097

• 19,997

• 98

The height of an item falling can be modeled by h_t = -16t² + h_o . Where h_o is the initial height in feet, and h_t is the height in feet at time t in seconds. If I drop a cup at a height of 18.9 feet, how long will it take the item to hit the ground?

• 2.09 seconds

• 1.09 seconds

• 1.19 seconds

• 0.09 seconds

The number of foam fingers sold at the Kennedy Center from 1900 to 2004 can be modeled by S = 2t² + 2t - 1, where t is the number of years since 1900. How many foam fingers were sold in 1976?

• 11,628

• 11,703

• 151

• 5,775

The height of an item falling can be modeled by h_t = -16t² + h_o . Where h_o is the initial height in feet, and h_t is the height in feet at time t in seconds. If I drop a bowling ball at a height of 13.1 feet, how long will it take the item to hit the ground?

• 0.1 seconds

• 1.9 seconds

• 0.90 seconds

• 0.81 seconds

The number of foam fingers sold at the Kennedy Center from 1900 to 2004 can be modeled by S = 2t² + 2t - 1, where t is the number of years since 1900. How many foam fingers were sold in 1976?

• 3,405

• 3,434

• 1,739

• 65

The height of an item falling can be modeled by h_t = -16t2 + h_o . Where h_o is the initial height in feet, and h_t is the height in feet at time t in seconds. If I drop a bowling ball at a height of 13.1 feet, how long will it take the item to hit the ground?

• 0.48 seconds

• 1.69 seconds

• 0.69 seconds

• 0.31 seconds

Determine the values of a, b, and c for the quadratic equation:

4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

What is this formula?

• This is the standard formula.

• This is the quadratic formula.

• This is the square root formula.

• This is the Pythagorean formula

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

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Tags

CCSS.HSA-REI.B.4B