Can you take a clearer picture or type the whole question I can't see that.
Answer:
Steps given below and graph is attached.
Step-by-step explanation:
First Step:
Find out
by substituting 

Second Step:
Find out
by substituting 

Third Step:
Draw a line passing through
.
Graph is attached.
Answer:
the slope of the tangent line at (40, f(40))the slope of the tangent line at (15, f(15)) the slope of the tangent line at (10, f(10))the slope of the line segment from (10, f(10)) to (40, f(40))
Answer:
i cant telll bc theres no picture
Overestimate because then the gardener could possibly save the left overs in case they get a chance to use it or they could give it to someone who may need it.