What 2 numbers multiply to get 1 and add to get negative 2

Anumber cube is rolled and a coin is tossed. the number cube and the coin are fair. what is the probability that the number rolled is less than 4 and the coin toss is tails?

The table shows the results of three plays in a football game. what is the net result of the three plays? football game 1st play 5 yards 2nd play -9 yards 3rd play 12 yards

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?