The respiratory system is best described as: a) the system which delivers oxygen to the bloodstream and takes away carbon dioxide. b) the system which provides the ability to burn all nutrients in the cells. c) the system which delivers oxygen directly to cells and takes away carbon dioxide. d) the system which removes wastes from cells and exhales them from the body.

The respiratory system is best described as bloodstream and takes away carbon dioxide

Explanation:

Respiratory system entails the inhalation of oxygen and exhalation of carbondioxide which is useful for plant for production of their food. Every living organisms respires, hence; oxygen is required to sustain life unless death looms

your answer is true

i am 100% sure

explanation:

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.