PLZ help!! Write a system of equations to describe the situation below, solve using substitution, and fill in the blanks.

Elena is looking for a job cutting hair. One option is self-employment at The Newport Salon, where she would pay $835 per month to rent a station and keep all of her earnings. Another option is to work at a franchise, where she would just have to pay the salon $5 for every haircut. If she performed a certain number of haircuts every month, the amount paid to either salon would be the same. How much would Elena pay? How many haircuts would that be?

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

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.