Answer:
-4
Step-by-step explanation:
2x + 5 = 85
2x = 80
x = 40
3x/(10-x)
3(40)/(10-40)
120/-30 = -4
Given:
An exponential function
passes through the points (0, 12000) and (2, 3000).
To find:
The values of a and b.
Solution:
We have,
...(i)
It passes through the point (0,12000). Putting x=0 and f(x)=12000 in (i), we get



Given function passes through the point (2,3000). Putting x=2, a=12000 and f(x)=3000 in (i), we get



Taking square root on both sides.

For an exponential function b cannot be negative. So,
.
Therefore, the value of a is 12000 and the value of b is
.
Answer:

Step-by-step explanation:
Two points are given to us and we need to find the slope of the line that passes through these two points . The two points are (-2,-3) and (5,4) .As we know that the slope of the line is given by
<u>Slope </u><u>of </u><u>a </u><u>line </u><u>is </u><u>:</u><u>-</u>

On using this formula we can find the slope of the line .
<u>Putting</u><u> the</u><u> </u><u>respective</u><u> values</u><u> </u><u>:</u><u>-</u>
The slope is -10, I used a graph for this.