Im in algebra what is
2r-6+5r=3-r+7

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

How is this equation completed? i cannot find any examples in the book.

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?