Question

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

Answer 1

Hint:

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

Answer 2

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

Answer 3

.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

Answer 4

Whoever created this question failed.

Answer 5

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