The increase of the radius is a linear increase since we have the constant rate of 0.07 inches per second
The equation for a linear growth/decay is given by the form

where

is the rate of increase and

is the value of

when

We have

when
So the equation is 
The length of the radius when

seconds is


inches
The son is 8. I’m not sure if I’m right hope this helps
Answer:
Step-by-step explanation:
4x^2 is the quadratic
3x is linear
-6 is the constant.
Answer:
x = 5/6
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.