Lab #3 solve the system of equations (answers must be listed as coordinates (x, y) or (x, y,z)
1.) x + y = −2 .
3 + = 0

2.) + + = 2 6
− 4 + 5 = 31
5 + 2 + 2 = 13

3.) − + 2 = −3
+ 2 + 3 = 4
2 + + = −3
word problems (scenarios used are not accurate) (must label each result)

4) the olympics have been held a total of 21 times in north america, europe, and asia. the number of north american sites is 5 more than the total number of sites in europe and asia. there are four more sites in europe than in asia. find the number of olympics sites each continent has held.

5) the admission fee at a small fair is $1.50 for children and $4.00 for adults. on a certain day, 2200 people enter the fair and $5050 is collected. how many children and how many adults attended?

6) a woman owns 21 pets. each of her pets is either a bird or a dog. if her pets have a total of 76 legs, how many birds and how many dogs does she have?

7) a landscaping company placed two orders with a nursery. the first order was for 13 bushes and 4 trees and totaled $487. the second order was for 6 bushes and 2 trees and totaled $232. the bills do not list the per-item price. what were the costs of one bush and of one tree?

8) sally is going to buy a total of 11 new items at target. she is going to buy jeans, dresses, and shoes. she is going to spend exactly $460 and has discovered that jeans are $25, dresses are $50, and the shoes are $40. she is also going to buy twice as many shoes as jeans. find out how many jeans, how many shoes, and how many dresses she will buy?