Y=mx+b
m=slope
b=yint
given
m=2
b=4/5
easy
y=2x+4/5
A
Answer:
Correct choice is B
Step-by-step explanation:
All three functions are increasing when x is increasing. You can find values of each function when x is "enough large". For example, at x=100,
1. linear function: 
2. exponential function: 
3. quadratic function: 
As you can see, when x approaches positive infinity, the exponential function will exceed both the linear and the quadratic functions.
Also you can use graphical method to get from the attached diagrams result. When x approaches positive infinity, the exponential function will exceed both the linear and the quadratic functions.
Correct choice is B.
Answer:

Step-by-step explanation:

Dividing both sides by -7.


There is only one solution that satisfies the equation.