130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. the
(incomplete) results are shown below:
cumulative frequency
# of times floss per week
0
1
12
frequency
12
21
13
relative frequency
0.0923
0.1615
0.1
0.1385
33
2
46
64
20
0.1538
100
0.1308
117
0.1
130

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

i need points

step-by-step explanation:

sorry bubs

answer: 1475

step-by-step explanation:

becuase you have to know what they are asking you

b is the correct answer