Algebra

- anonymous

Algebra

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- anonymous

A ball is thrown upward from the top of a building. The function below shows the height of the ball in relation to sea level, f(t), in feet, at different times, t, in seconds:
f(t) = −16t2 + 48t + 100
The average rate of change of f(t) from t = 3 seconds to t = 5 seconds is _____feet per second.
Answer for Blank 1:

- anonymous

@DaBest21

- Janu16

f(5)−f(3)5−3=−60−1002=−80 so its -80

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## More answers

- anonymous

Thank you, could you help me with a few more?

- anonymous

A basketball is thrown upwards. The height f(t), in feet, of the basketball at time t, in seconds, is given by the following function:
f(t) = −16t2 + 94t + 12
Which of the following is a reasonable domain of the graph of the function when the basketball falls from its maximum height to the ground?
2.9375 < t < 6
2 < t < 5
1 < t < 4
0 < t < 3

- anonymous

ok

- anonymous

@DaBest21

- anonymous

How do you know?

- anonymous

Could you kind of explain how you got it?

- anonymous

Alright

- anonymous

So it's a?

- anonymous

@CoinBank77 hes got it right?

- anonymous

do u need me

- anonymous

Not sure, he's said D,B,then A. Yeah I'd like your help @DaBest21

- anonymous

ok

- anonymous

i believe a because 1 through 2.9376 is where it begins to be a positive number and 5 is where it ends not 100% shure though

- anonymous

@Abhisar

- anonymous

That sounds right, and it's the same answer janu got before he deleted all his responses. Can you help me a few more questions?

- anonymous

one sec @Abhisar might come to check

- anonymous

Alright, I hope he's able to!

- Janu16

its a she not a he. i deleted my comment because i helped you with the first one and you gvae medal to some other person so ya laters

- anonymous

@DaBest21 Ready for another? Abhisar didn't respond

- anonymous

A quadratic equation is shown below:
x2 + 18x + 76 = 0
Which of the following is the first correct step to write the above equation in the form (x − p)2 = q, where p and q are integers?
Add 9 to both sides of the equation
Add 5 to both sides of the equation
Subtract 5 from both sides of the equation
Subtract 9 from both sides of the equation

- anonymous

@welshfella

- anonymous

@pooja195

- Janu16

b

- anonymous

Hmm, @DaBest21 any comments or is B right?

- anonymous

You there?

- anonymous

The graphs of f(x) and g(x) are shown below:
What are the solutions to the equation f(x) = g(x)?
x = −3, 4
x = −3.8, −0.4
x = −3.8, 3
x = 6.5, −6

- anonymous

##### 1 Attachment

- anonymous

@undeadknight26 @welshfella @Haseeb96 @mathstudent55 @pooja195

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