My friend had 18 cookie and my cousin had 1234 how many did he have

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

Solve the system of equations. y= 2x y= x^2 - 15

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.