Below is the graph of the function y = g(t) with 4 points on the graph labeled,A, B,C and D. Use the graph and only the labeled points to answer the questions which follow. If none of the points satisfy the condition, then say "none".
y=g(t)
a. Give all points for which function g is increasing. Enter your answers as a comma separated list or type the word none in the blank.
b. Give all points for which function g is concave down.Enter your answers as a comma separated list or type the word none in the blank.
c. Between which two points will the average rate of change in function g be negative? Enter your answers as a comma separated list or type the word none in the blank.