32 + (-2) -2 please help

Three coins are flipped. what is the probability that there will be at least two tails?

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.

The suare root of 9x plus 7 plus the square rot of 2x equall to 7