In drawing a histogram, which of the following suggestions should be followed?

a) leave large gaps between bars. this allows room for comments.

b) the heights of the bear should equal the class frequency.

c) bars should be square so that both height and width equal the class count.

d) scale of the vertical axis should be that of the variable whose distribution you are displaying.

B) The heights of the bear should equal the class frequency.

Step-by-step explanation:

In drawing a histogram, the heights of the bear should equal the class frequency. as in histogram height of bar represent the frequency density and  it´s area represent the frequency of class interval. Frequency distribution are represented by mean of rectangle. Earlier in the bar graph, width of bar does not represent any information, however, histogram´s bar width represent class interval.

f-1(x)= cube root of 19x squared/x

step-by-step explanation:

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x