Predict which statements are true about the intervals of the continuous function. Check all that apply.
a. f(x)>0 over the interval (−[infinity],3).
b. f(x)≤0 over the interval [0,2].
c. f(x)<0 over the interval (−1,1).
d. f(x)>0 over the interval (−2,0).
e. f(x)≥0 over the interval [2,[infinity]).