Quick question i know my multiplication but i am having trouble remebering 7 x 6 can anyone tell me real quick?

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)