Pls anwser number 11 and 12 and others

11. 17 heartbeats in 15 seconds vs 68 heartbeats is 60 seconds, 15 is one fourth of 60 so to see if they are equal we will simply multiply 17 by 4 which equals=68 which means the rates are equal. 12. 96 miles for 4 gallons vs 380 miles for 15 gallons, 15/4=3.75 so we know we must multiply 96 by 3.75, 96*3.75=360 which means this rate is equal

The answer is: y would equal 3 because if you simplify the equation then it would be y= 3x+9 and if you divide 3x and 9 by 3 it would equal 3. y= 3