When 27x^2z/-3x^2z^4 is completely simplified, the exponent on the variable z is

The production line where you work can assemble 5 appliers every 30 minutes at this rate how long should it take the line to assemble 125 amplifiers

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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.