Please write these equations as function in "y=........."form
1. 3y=15x-12
2. 3y-21=12
3. 5y+3=2y-3x+15

Question

Please write these equations as function in "y=........."form
1.   3y=15x-12
2.   3y-21=12
3.   5y+3=2y-3x+15

hero · Answer

Hint: 

.15x + .25y = 13.00
x = 2y

hero · Answer

x = Number of daily paper
y = Number of Sunday paper

hero · Answer

.15x + .25y = 13
x = 2y

Substitute x = 2y into first equation: 
.15(2y) + .25y = 13
.30y + .25y = 13
.55y = 13
y = 13/.55
y = 23.6364 
y ≈ 24

x = 47.27
x ≈ 48

hero · Answer

Whoever created this question failed.

hero · Answer

You shouldn't edit the original question when you need to post another question. Now you've effectively made my solutions look silly.