To all math experts here. Please answer it.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Atravel agent is booking a trip to england, scotland, ireland, and france for a group of senior citizens. the agent sent surveys to the group, asking which countries they would like to visit, in order, and created the shown preference schedule (e = england, i = ireland, s = scotland, f = france). which country is the condorcet winner? number of votes 15 12 16 19 1st f e e i 2nd e s i s 3rd s i s e 4th i f f f 1. scotland 2. england 3. france 4.ireland

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5