Anyone mind answering these? pretty ? you so

Consider the function f(x)=-5x+3 what is f(-2)

Two consecutive negative integers have a product of 30. what are the integers?

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean