Okkk
Step-by-step explanation:
1. 5(1+9v)=5+5x9v=5+(5x9v)=5+45v
2.(20:4/12:4)=4(5b+3)
Answer:
2x−1 − 4x^3−x
Step-by-step explanation:
Answer: First option.
Step-by-step explanation:
You know that the following function model the height "h" of the ball (in feet) after a time "t" (in seconds):
Notice that it is a Quadratic function, therefore, it is a parabola.
Then, the x-coordinate of its vertex will give you the time in seconds in which the balll reaches its maximum height and the y-coordinate of the vertex will give you the ball's maximum height.
You can find the x-coordinate of the vertex with this formula:

You can identify that:

Substituting values, you get:
FInally, you must substiute this value into the Quadratic function and then evaluate in order to find the ball's maximum height.
This is:
Answer:
To be sure, the result for the equation is approximately: 30,891.0807
Step-by-step explanation:
The calculation for the equation:

Pre tax in first city = x
pre tax in 2nd city = x - 500
0.09x + 0.095(x - 500) = 970
0.09x + 0.095x - 47.5 = 970
0.09x + 0.095x = 970 + 47.5
0.185x = 1017.50
x = 1017.50/0.185
x = 5500 <== first city
5500 - 500 = 5000 <== 2nd city