Which of the following expressions are equivalent to the expression shown below? Select all that apply.
3x + 13 + 2(3y + 5)
3x + 5y + 18
3(x + 2y) + 23
9xy + 23
3x + 6y + 23
8xy + 18

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.

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?