HELP HELP HELP HELP A lake has a rectangular area roped off where people can swim under a lifeguard's supervision. The swimming section has an area of x^2+3x-40 square feet, with the long side parallel to the lake shore.

1.What are possible dimensions of the roped-off area? Use factoring.
2.How much rope is needed for the three sides that are not along the beach? EXPLAIN
3.The rope used to mark the swimming area is 238 ft long. What is x when the total length of rope is 238 ft? EXPLAIN

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.

Determine if the following statement is true or false. the normal curve is symmetric about its​ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about its​ mean, because the mean is the balancing point of the graph of the distribution. the median is the point where​ 50% of the area under the distribution is to the left and​ 50% to the right.​ therefore, the normal curve could only be symmetric about its​ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with one​ peak, which means the​ mean, median, and mode are all equal.​ therefore, the normal curve is symmetric about the​ mean, mu. c. the statement is false. the mean is the balancing point for the graph of a​ distribution, and​ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of a​ distribution, and​ therefore, all distributions are symmetric about the mean.

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)