Given the following frequency distribution, how many pieces of data were less than 28.5? 
Definitions:
Private Network
A network designed for the exclusive use of one organization or individual, not accessible by the general public.
Social Network
A platform or community where individuals can connect, share, and communicate with each other online.
Content Marketing
A marketing strategy that concentrates on producing and sharing content of high value, relevance, and consistency to draw in and maintain a specific target audience.
Community Members
Individuals who belong to a specific group or population sharing common interests, goals, or characteristics.
Q2: You own a chain of 12 apartment
Q4: If a baseball player's batting average is
Q23: A time series graph is useful for
Q23: The figure below is a result of
Q45: The table lists the number of students
Q54: When there is one independent variable, the
Q57: Use the brute force algorithm to solve
Q70: Each of 8 students wishes to buy
Q75: How many vertices in the graph below
Q89: What is the valence of vertex A