Answer:

Step-by-step explanation:
For
the set of points that include all solutions are
such that
; then we have
.
What is important to stress here is that
represents all of the solutions, while other points that we are given represent one solution (for example, point (2,-1) is just one solution)
Answer:
d = 14
Step-by-step explanation:

Football State University = $21.42 for one game
University of Football = $25 for one game
Gridiron University = $29.16 for one game
Sports University = $31.25 for one game
Out of these, Football State University gives the best deal on football tickets.
Answer:
In mathematics, a percentage (from Latin per centum "by a hundred") is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", or the abbreviations "pct.", "pct"; sometimes the abbreviation "pc" is also used. A percentage is a dimensionless number (pure number).
Step-by-step explanation: