Which of the following explains why the heart is organized so that it pumps blood to two different locations? a. to supply blood to two different sides of the body b. to allow a way for the blood to pick up new blood cells c. to move oxygen-poor blood through the lungs and to move oxygen-rich blood to the rest of the body d. to provide a way for blood to pick up nutrients at one location and oxygen at another

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.