Suppose the expression 9.98t stand for the total cost of buying t-shirt that sell for 9.98 each what does t represent

Solve the inequality. write the inequality in interval notation. 9(t-2)> 3(t-7)

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?