2/3 Quadratic Characteristics in Context

A ball was thrown into the air from a platform. The ball's height after x seconds can be modelled by the function 

 $y=-16x^2+64x+80$  . What was the starting height?

• 80 feet

• 5 feet

• 2 feet

• 144 feet

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.B.4

A ball was thrown into the air from a platform. The ball's height after x seconds can be modelled by the function 

 $y=-16x^2+64x+80$  . How long was the ball in the air?

• 80 seconds

• 5 seconds

• 2 seconds

• 144 seconds

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

A ball was thrown into the air from a platform. The ball's height after x seconds can be modelled by the function 

 $y=-16x^2+64x+80$  . How high did the ball get?

• 80 feet

• 5 feet

• 2 feet

• 144 feet

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.B.4

The temperature, in degrees F, in Citysville on a particular day can be modelled by the function  $y=-.1x^2+3x+60$  , where x represents the hours passed since midnight. What was the temperature at the beginning of the day (0 hours after midnight)?

• 60 degrees

• 15 degrees

• 82.5 degrees

• 43.7 degrees

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.A.2

The temperature, in degrees F, in Citysville on a particular day can be modelled by the function  $y=-.1x^2+3x+60$  , where x represents the hours passed since midnight. What will the highest temperature be?

• 60 degrees

• 15 degrees

• 82.5 degrees

• 43.7 degrees

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.B.4

The temperature, in degrees F, in Citysville on a particular day can be modelled by the function  $y=-.1x^2+3x+60$  , where x represents the hours passed since midnight. After how many hours after midnight will the temperature be at its hottest?

• 0 hours

• 15 hours

• 12 hours

• 16 hours

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

A company's profit in thousands of dollars, y, can be represented by the function  $y=-50\left(x-1\right)\left(x-9\right)$  if they charge x dollars for their item. What do the x-intercepts of x = 1 and x = 9 represent?

• When the company will break even (make/lose no money)

• When the company will make its maximum profits

• When the company will make its minimum profits

• When the company will make exactly $50,000.

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.SSE.A.1

A company's profit in thousands of dollars, y, can be represented by the function  $y=-50\left(x-1\right)\left(x-9\right)$  if they charge x dollars for their item. How much should this company charge for their item so they have a maximum profit?

• $1

• $9

• $5

• $800

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

A soccer ball is kicked. The height of the ball, in feet, x-seconds after it is kicked can be shown in the table. How high was the ball when it was kicked?

• On the ground

• 3 feet

• 36 feet

• 20 feet

• 6 feet

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.B.4

A soccer ball is kicked. The height of the ball, in feet, x-seconds after it is kicked can be shown in the table. How long does it take the ball to land?

• 0 seconds

• 2 seconds

• 4 seconds

• 6 seconds

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.REI.B.4