OpenStax, Algebra and Trigonometry 2e §11.8 Solving Systems with Cramer's Rule · Review Exercise 138 · Linear Algebra · Determinants
Solving Systems with Cramer's Rule · Review Exercise 138
Write a system of equations to solve each problem. Solve the system of equations.
A school club held a bake sale to raise money and sold brownies and chocolate chip cookies. They priced the brownies at $2 and the chocolate chip cookies at $1. They raised $250 and sold 175 items. How many brownies and how many cookies were sold?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Algebra and Trigonometry 2e · §11.8 Solving Systems with Cramer's Rule · Review Exercise 138
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.