For the following right triangle, find the side length x

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

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

What signals you that factoring by grouping is the best method to use when factoring a problem?