Answer:
a = 8, b = 
Step-by-step explanation:
Given the exponential function
f(x) = a
To find a and b use the given coordinate points on the graph
Using (0, 8 ), then
8 = a
[ = 1 ] , then
a = 8
f(x) = 8
Using (2, 18 ) , then
18 = 8b² ( divide both sides by 8 )
= b² , that is
b² = 
( take the square root of both sides )
b = 
=
Thus
f(x) = 8
I think you would use the equation 2x+1+33+90=180
English...because english subject is a part of our language worldwide and that can communicate all over the world...its just my opinion
D. The exclusion is important because we cannot divide by zero. Apart from that we are simply looking at a function.
The answer will be 40. As it doubles twice during 220mins- 10 to 20 and then 20 to 40.
