A manufacturer knows that their items have a normally distributed lifespan, with a mean of 10.8 years, and standard deviation of 2.6 years. If you randomly purchase one item, what is the probability it will last longer than 14 years

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.

If you could answer these your a life saver

Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z