The Algebros are visting Michigan State University when they stumble upon a Girl Scout selling cookies. Sully orders 3 boxes of Tagalongs and 4 boxes of Somoas for $26. Brust isn't statisfied with
such a small order and yells "UPGRADE!!" He then upgrades the order to 5 boxes of Tagalongs and
6 Boxes of Somoas which costs $41.

a. Write a system of linear equations to model the situation.
(Let x = cost of a box of Tagalongs and y = cost of a box of Somoas.)

b. Solve your system of equations above using elimination to find the cost of each type of cookie.

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )