We know that the line is tangent at the point (2,8)
The derivative of the function at x=2 is

So, the tangent line passes through the point (2,8) and has slope 2. The equation is

This line crosses the x axis where y=0:

Answer:
21.89
Step-by-step explanation:
add and subtract


Equation of straight line in point - slope form :

( m = slope = 4, point (5 , 17) )




Now, it's the form of line in slope - intercept form, ( slope = coefficient of x = 4 and y - intercept = -3 )


The events 'select a plain pencil' and 'select a color pencil' are independent. therefore the probability of both occurring is the product of their probabilities:

The answer is 3/20 or 0.15.