Problema Solution
at a local bookstore ,john purchaseda history textbook and a magazine that cost a total
Of $32,not including tax.if the price of a history textbook ,h,is $4more than 3times
the price of the magazine ,m,which system of linear equations could be used to determine
The price of the history textbook and the magazine
Answer provided by our tutors
total cost c=$32
h=3m+4
h+m=c=32
substiture h from the first equation into the second equation:
(3m+4)+m=32
4m +4 = 32
4m=28
m=$7 for magazine
substitute m into the first equation
h=3(7)+4 = $25 for book
this checks because the total is 7 + 25 = $32