An evolutionary tree: must be rooted to properly convey evolutionary relationships. can illustrate the convergence of species. shows the number of character changes that have occurred between taxa. shows the similarities between different taxa. is a hypothesis about evolutionary relationships.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

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.

potentially fatal issues such as heart attacks and strokes

explanation: