Write an equation for the following problem. "Ross decides to go ice skating with his friends.
The rink charges $8 to rent skates and $7.50 for
each hour. Write anequation to find the total
cost (C) if he skates for 3 hours

Nine more than four times a number is the same as one less than twice the number. find the number?

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.

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.