anonymous one year ago Help! Algebra!

1. anonymous

what is it

2. anonymous

The following function represents the production cost f(x), in dollars, for x number of units produced by company 1: f(x) = 0.05x2 − 7x + 300 The following table represents the production cost g(x), in dollars, for x number of units produced by company 2: x g(x) 0.6 899.58 0.8 899.52 1 899.50 1.2 899.52 1.4 899.58 Based on the given information, the minimum production cost for company _____ is greater. [Put 1 or 2 in the blank space]

3. anonymous

it is 1 because the minimum would be for one so 293.1 so company 1

4. 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 + 34t + 80 The average rate of change of f(t) from t = 5 seconds to t = 7 seconds is _____ feet per second.

5. anonymous

I got -158

6. anonymous

@DaBest21

7. arindameducationusc

I am getting 84

8. anonymous

i got 92

9. anonymous

i mean 2

10. anonymous

5=90 and 7=94 94-90=4 4/2=2

11. anonymous

i got -30

12. arindameducationusc

wow... Everyone with different answers..!! ;)

13. arindameducationusc

@MafHater Give us options now

14. anonymous

let's graph it out

15. anonymous

Hold on, I'm reworking it.

16. anonymous

At f(5) = -150 f(7) = -466

17. anonymous

There are no options, I need to type in the answer.

18. anonymous

so yea its -158

19. anonymous

@phi

20. anonymous

Ok, I need help on another.

21. 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

22. anonymous

1st option

23. anonymous

A

24. anonymous

The graphs of f(x) and g(x) are shown below:

25. anonymous

What are the solutions to the equation f(x) = g(x)? x = −3, 4 x = −4, 2.5 x = −0.8, 2.5 x = 8, −8

26. anonymous

but for the other one i was right im positive it was 92

27. anonymous

For the basketball one @DaBest21 ?

28. anonymous

the basketball hits the floor at 6

29. anonymous

@phi ?

30. LynFran

what do u need help with?

31. LynFran

for fx=gx we look where the 2 function intersect but there they only want the x values so x=-4 ,2.5

32. LynFran

$\frac{ (-16(7)^{2}+34(7)+80)-(-16(5)^{2}+34(5)+80) }{ 7-5 }=-158$