The Pet Kennel has 12 dogs and cats for the weekend. The number of dogs is three less than

twice the number of cats. Write a system of

equations to model this.

°{

oſ d+c= 12

Id=2e - 3

os d+c= 12

2c = d - 3

Osd+c= 12

1 c = 2d - 3

of d+c = 12

Id=3- 26

Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?