Quadratic Application

Find the zeros of this quadratic.

• b=4/5, b=3

• b=4, b=-3

• b=1/5, b=3

• b=4/5, b=-3

Tags

CCSS.HSA-REI.B.4B

What are the solutions to the following equation: 3x²-2x-5=0

• x=1 and x=3

• x=2 and x-5

• x=-1 and x=5/3

• No solutions

Tags

CCSS.HSA-REI.B.4B

The function f(t) = -5t²+20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object to hit the ground?

• 4 seconds

• 2 seconds

• 6 seconds

• 9 seconds

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

240 ft

256 ft

265 ft

230 ft

• 240 ft

• 256 ft

• 265 ft

• 230 ft

What are the solutions when factoring?

• x = 6,2

• x = -6, -2

• x = 8, 12

• x = 4, 4

Tags

CCSS.HSA-REI.B.4B

How high would an elfen jump if the equation for jumping from a cliff is:     h(t) = -16t² + 8t + 24?

• 25

• 24

• 8

• 26

In order to find the vertex of an equation in standard form, the first two steps are to use the equation _____ to find the x value, and then you can plug that value back into the equation to find the _____.

• -b/2a, y-value

• (x-h)^2, y-intercept
  

• (x-r1), solution

• ax^2, vertex

Find the vertex of
f(x) = -x² - 4x + 12.

• (-2, 16)

• (-2, 14)

• (2, 4)

• (-2, 4)

Heather dropped a water balloon over the side of her school building from a height of 80 feet. The approximate height of the balloon at any point during its fall can be represented by the following quadratic equation:

h = -16t² + 80

About how long did it take for the balloon to hit the ground?

• 1.73 seconds

• 2.24 seconds

• 2.45 seconds

• 2.83 seconds