Which one of the following statements is  not  correct?                 a.  neurons are made up of neurolemma.      b.  muscles are made up of long, slender cells.      c.  there are two types of bones—compact and spongy.      d.  nerves are made of sensory and/or motor fibers.

C. i believe if i am wrong i apologize

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.