SOLUTION: how do you solve this math problem : one online bookstore charges $10 per book and $8 for shipping. Another online bookstore charges $12 per book and offers free shipping. For what

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: how do you solve this math problem : one online bookstore charges $10 per book and $8 for shipping. Another online bookstore charges $12 per book and offers free shipping. For what      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 821918: how do you solve this math problem : one online bookstore charges $10 per book and $8 for shipping. Another online bookstore charges $12 per book and offers free shipping. For what number of books is the cost the same?
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
---
y = 10x + 8
y = 12x
---
put the system of linear equations into standard form
---
10x - y = -8
12x - y = 0
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
answer:
x= 4
y= 48
if you purchase 4 books, you pay the same net cost of $48 for the books, regardless of which store you make your purchase from
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php