Explain scientifically whether humans and humpback whales share a close evolutionary relationship. QUESTIONS:
Do they have any body structure similarities that suggest an evolutionary link?
How do scientists classify each organism? What is their kingdom, phylum, class order, and so on? Does this tell you anything about their evolutionary lineage?
Does their embryology hold any clue to their evolutionary relationship?

you know they are heterozygous for a trait because they have it as jj or jj.

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.