Find the domain of the function.
f(x) = x² - 9x - 15
what is the domain off?

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Prove that quadrilateral is a rhombus.