20 cos シ is your answer
Step-by-step explaination
Answer:
Increasing:
Decreasing:
Concave Up:
Concave Down:
Step-by-step explanation:
Increasing intervals are intervals where the function is approaching positive infinity (upwards). Decreasing intervals are intervals where the function is approaching negative infinity (downwards). Concavity refers to intervals that resemble a parabola either opening upwards (Concave Up) or opening downwards (Concave Down).
The slope if the line is 7/3