Select all the correct answers. Choose each statement that is scientific.
The universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago.
Human life is more valuable than other forms of life on Earth because humans are more intelligent than other organisms.
Ocean tides are caused by the uneven gravitational pulls of the Moon and Sun on different parts of Earth.
The opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on Earth.

the answer is:

carbon dioxide

blue

light-years

magnitude

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.