Which ordered pair is the best estimate of the solution of the system of equations?

a) (1.5, –3.9)
b) (1.5, –3.5)
c) (1.9, –3.9)
d) (1.9, –3.5)

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?