He uses
jse a
understand proportional relationships
example showing proportional relationships
prerequisite: understand
study the example showin
in a table and a graph. then solve problems
onal
describe
12 14 16
3 3.5 4
- paint you
example
bottles of water cost $2 each. is the
relationship of the cost to the number of
bottles a proportional relationship?
y is 4.
you can use a table or a graph to see
whether the relationship is proportional.
total cost (5)
8
number of bottles
total cost (s)
total cost
number of bottles
0 1 2 3 4 5 6 7
number of bottles
all of the ratios in the table are equal to?
this is the unit rate and means that it costs $2 for one bottle
of water. the graph is a straight line through the origin (0,0).
so this is a proportional relationship.
anni pm
what is the cost of 12 bottles? explain.
how do i start the problem

The resumâ´es of two male applicants for a college teaching position in chemistry are placed in the same file as the resumâ´es of two female applicants. two positions become available, and the first, at the rank of assistant professor, is filled by selecting one of the four applicants at random. the second position, at the rank of instructor, is then filled by selecting at random one of the remaining three applicants. using the notation m2f1, for example, to denote the simple event that the first position is filled by the second male applicant and the second position is then filled by the first female applicant, (a) list the elements of a sample space s; (b) list the elements of s corresponding to event a that the position of assistant professor is filled by a male applicant; (c) list the elements of s corresponding to event b that exactly one of the two positions is filled by a male applicant; (d) list the elements of s corresponding to event c that neither position is filled by a male applicant; (e) list the elements of s corresponding to the event a â© b; (f) list the elements of s corresponding to the event a âş c; (g) construct a venn diagram to illustrate the intersections and unions of the events a, b, and c.