Answer:
D. The function f has 3 horizontal tangent lines
Step-by-step explanation:
Well whenever any function crosses the x-axis, it means that the y-value is equal to zero.
In this case when the derivative passes the x-axis it indicates the tangent line corresponding to that x-value has a slope of zero, which when plotted is a horizontal line.
This means that the graph f has 3 horizontal tangent lines.
16b and 3b are the answers
For the a factor in a 1 and then do the problem once you find the product plug your a back in
Answer:
x > 0; $1280
Step-by-step explanation:
Domain should be x > 0 because length is not negative
When x = 8
Cost = 20(8²) = 1280
