Which of the following statements are true regarding functions?
check all that apply

Write the converse of the following statement: if the trees have no leaves, then it is fall. if the trees have no leaves, then it is fall. the trees have no leaves, therefore it is fall. it is fall since the trees have no leaves. if it is fall, then the trees have no leaves.

Which is an equation for the nth terms of the sequence 12,15,18,21

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?